{"product_id":"d-e-neutralizing-agar","title":"D\/E Neutralizing Agar (AS-1190) | Disinfectant Neutralization Medium","description":"\u003c!--\n  AuSaMicS Life Science(tm) | D\/E Neutralizing Agar | AS-1190\n  CSS-only tabs - no JavaScript - works in Shopify and all CMS\n--\u003e\n\u003cdiv id=\"au-de1190\"\u003e\n\u003cstyle\u003e\n#au-de1190{\n  --g1:#1A4731;--g2:#2D6A4F;--ga:#EAF4EE;--gb:#F5FAF7;\n  --bk:#111827;--ch:#374151;--gx:#6B7280;--lt:#E5E7EB;--wh:#FFFFFF;\n  --or:#B45309;--bl:#1E40AF;--rd:#991B1B;\n  font-family:'Segoe UI',system-ui,sans-serif;font-size:14px;color:var(--bk);\n  max-width:980px;margin:0 auto;background:var(--wh);\n  border:1px solid var(--lt);border-radius:4px;overflow:hidden;\n}\n#au-de1190 .r{position:absolute;opacity:0;pointer-events:none;width:0;height:0}\n#au-de1190 .hdr{background:var(--g1);padding:26px 32px 22px;display:flex;align-items:flex-start;justify-content:space-between;gap:24px}\n#au-de1190 .hdr-l{flex:1}\n#au-de1190 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.bcp-p{display:inline-block;background:#7B2D8B;color:#fff;font-size:11px;font-weight:700;padding:2px 10px;border-radius:2px}\n#au-de1190 .bcp-y{display:inline-block;background:#D4A017;color:#fff;font-size:11px;font-weight:700;padding:2px 10px;border-radius:2px}\n@media(max-width:640px){\n  #au-de1190 .hdr{flex-direction:column;padding:18px 20px}\n  #au-de1190 .strip{grid-template-columns:repeat(3,1fr)}\n  #au-de1190 .pls .pl{padding:20px}\n  #au-de1190 .two-col,.sig{grid-template-columns:1fr}\n  #au-de1190 .cards{grid-template-columns:1fr}\n  #au-de1190 .tl{padding:10px 13px;font-size:11px}\n}\n\u003c\/style\u003e\n\n\u003cinput class=\"r\" type=\"radio\" name=\"de-tabs\" id=\"de-pd\" checked\u003e\n\u003cinput class=\"r\" type=\"radio\" name=\"de-tabs\" id=\"de-tds\"\u003e\n\u003cinput class=\"r\" type=\"radio\" name=\"de-tabs\" id=\"de-sds\"\u003e\n\u003cinput class=\"r\" type=\"radio\" name=\"de-tabs\" id=\"de-coa\"\u003e\n\n\u003cdiv class=\"hdr\"\u003e\n  \u003cdiv class=\"hdr-l\"\u003e\n    \u003cdiv class=\"cat\"\u003eDisinfectant Neutralizing Medium · Environmental Monitoring · Antimicrobial Efficacy Testing\u003c\/div\u003e\n    \u003cdiv class=\"pname\"\u003eD\/E Neutralizing Agar (Dey\/Engley)\u003c\/div\u003e\n    \u003cdiv class=\"psub\"\u003eBroad-Spectrum Neutralizing System · AOAC · USP \u0026lt;51\u0026gt;\/\u0026lt;61\u0026gt;\/\u0026lt;62\u0026gt; · ISO 14698\u003c\/div\u003e\n    \u003cdiv class=\"badges\"\u003e\n      \u003cspan class=\"badge\"\u003eAOAC Use-Dilution Methods\u003c\/span\u003e\n      \u003cspan class=\"badge\"\u003eUSP \u0026lt;51\u0026gt; · USP \u0026lt;61\u0026gt;\/\u0026lt;62\u0026gt;\u003c\/span\u003e\n      \u003cspan class=\"badge\"\u003eISO 14698-1\/2\u003c\/span\u003e\n      \u003cspan class=\"badge\"\u003eFDA Aseptic Guidance\u003c\/span\u003e\n      \u003cspan class=\"badge\"\u003eDey \u0026amp; Engley 1970\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"hdr-r\"\u003e\n    \u003cdiv class=\"brand\"\u003eAuSaMicS\u003c\/div\u003e\n    \u003cdiv class=\"brand-s\"\u003eLife Science™\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"strip\"\u003e\n  \u003cdiv class=\"si\"\u003e\n\u003cdiv class=\"sl\"\u003eCat No.\u003c\/div\u003e\n\u003cdiv class=\"sv\"\u003eAS-1190\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"si\"\u003e\n\u003cdiv class=\"sl\"\u003eFormat\u003c\/div\u003e\n\u003cdiv class=\"sv\"\u003eDehydrated Powder\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"si\"\u003e\n\u003cdiv class=\"sl\"\u003eFinal pH\u003c\/div\u003e\n\u003cdiv class=\"sv\"\u003e7.6 ± 0.2\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"si\"\u003e\n\u003cdiv class=\"sl\"\u003eSuspension\u003c\/div\u003e\n\u003cdiv class=\"sv\"\u003e54.02 g \/ L\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"si\"\u003e\n\u003cdiv class=\"sl\"\u003eIncubation\u003c\/div\u003e\n\u003cdiv class=\"sv\"\u003e35–37 °C \/ 40–48 h\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"tabs\"\u003e\n  \u003clabel class=\"tl\" for=\"de-pd\"\u003eProduct Description\u003c\/label\u003e\n  \u003clabel class=\"tl\" for=\"de-tds\"\u003eTechnical Data Sheet\u003c\/label\u003e\n  \u003clabel class=\"tl\" for=\"de-sds\"\u003eSafety Data Sheet\u003c\/label\u003e\n  \u003clabel class=\"tl\" for=\"de-coa\"\u003eCertificate of Analysis\u003c\/label\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pls\"\u003e\n\n\u003c!-- TAB 1: PD --\u003e\n\u003cdiv class=\"pl\" id=\"dp-pd\"\u003e\n\u003cdiv class=\"sh\"\u003eOverview\u003c\/div\u003e\n\u003cp\u003eD\/E Neutralizing Agar (Dey\/Engley Neutralizing Agar) is a selective, enriched solid medium developed by Dey and Engley (1970) for the \u003cstrong\u003eneutralization and recovery of microorganisms exposed to antiseptics and disinfectants\u003c\/strong\u003e in environmental sampling and antimicrobial efficacy testing. It incorporates a comprehensive broad-spectrum neutralizing system capable of inactivating residual chemicals — halogens, mercurials, aldehydes, quaternary ammonium compounds (QACs), and phenolics — without harming viable bacteria, enabling accurate assessment of bactericidal activity.\u003c\/p\u003e\n\u003cp\u003eThe bromocresol purple (BCP)–dextrose indicator system differentiates fermentation: \u003cspan class=\"bcp-p\"\u003ePurple\u003c\/span\u003e gel shifts to \u003cspan class=\"bcp-y\"\u003eYellow\u003c\/span\u003e upon acid production, providing presumptive visual indication of microbial growth. D\/E Neutralizing Agar complies with AOAC use-dilution methods, USP \u0026lt;51\u0026gt;\/\u0026lt;61\u0026gt;\/\u0026lt;62\u0026gt;, and ISO 14698 standards.\u003c\/p\u003e\n\n\u003cdiv class=\"sh\"\u003eNeutralizing System — Components \u0026amp; Targets\u003c\/div\u003e\n\u003ctable class=\"dt\"\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eNeutralizing Agent\u003c\/th\u003e\n\u003cth\u003eg\/L\u003c\/th\u003e\n\u003cth\u003eTarget Disinfectant Class\u003c\/th\u003e\n\u003cth\u003eMechanism\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSodium Thiosulfate\u003c\/td\u003e\n\u003ctd\u003e6.0\u003c\/td\u003e\n\u003ctd\u003eHalogens (Cl\u0026amp;sub2;, I\u0026amp;sub2;, Br\u0026amp;sub2;)\u003c\/td\u003e\n\u003ctd\u003eReductive neutralization — converts active halogen to harmless halide\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSodium Thioglycollate\u003c\/td\u003e\n\u003ctd\u003e1.0\u003c\/td\u003e\n\u003ctd\u003eMercurial compounds, metal biocides\u003c\/td\u003e\n\u003ctd\u003eChelation and reduction — sequesters heavy metal ions\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSodium Bisulfite\u003c\/td\u003e\n\u003ctd\u003e2.5\u003c\/td\u003e\n\u003ctd\u003eAldehydes (glutaraldehyde, formaldehyde)\u003c\/td\u003e\n\u003ctd\u003eReductive addition — inactivates aldehyde groups\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eLecithin\u003c\/td\u003e\n\u003ctd\u003e7.0\u003c\/td\u003e\n\u003ctd\u003ePhenolics, membrane-active agents\u003c\/td\u003e\n\u003ctd\u003eMicellar entrapment — surrounds lipophilic phenolic molecules\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePolysorbate 80\u003c\/td\u003e\n\u003ctd\u003e5.0\u003c\/td\u003e\n\u003ctd\u003eQACs, surface-active agents\u003c\/td\u003e\n\u003ctd\u003eCompetitive surfactant — displaces and sequesters QACs\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eLecithin + Polysorbate 80\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eChlorhexidine, hexachlorophene, bis-phenols\u003c\/td\u003e\n\u003ctd\u003eSynergistic neutralization of membrane-disrupting agents\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"note\"\u003eCombined neutralizing system inactivates \u003cstrong\u003e\u0026gt; 95%\u003c\/strong\u003e of common disinfectants while supporting reliable growth of stressed Gram-positive and Gram-negative organisms.\u003c\/div\u003e\n\n\u003cdiv class=\"sh\"\u003eApplications\u003c\/div\u003e\n\u003cdiv class=\"cards\"\u003e\n  \u003cdiv class=\"card\"\u003e\n    \u003cdiv class=\"card-icon\"\u003e🏭\u003c\/div\u003e\n    \u003cdiv class=\"card-title\"\u003eEnvironmental Monitoring\u003c\/div\u003e\n    \u003cdiv class=\"card-body\"\u003eRecovery of viable bacteria from hospital, cleanroom, and food facility surfaces treated with disinfectants. ISO 14698-1\/2; USP \u0026lt;61\u0026gt;\/\u0026lt;62\u0026gt;.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"card\"\u003e\n    \u003cdiv class=\"card-icon\"\u003e🧪\u003c\/div\u003e\n    \u003cdiv class=\"card-title\"\u003eAntimicrobial Efficacy\u003c\/div\u003e\n    \u003cdiv class=\"card-body\"\u003eAssessment of bactericidal activity of antiseptics, QACs, phenolics, and halogens per AOAC use-dilution methods (955.11; 964.02; 966.04).\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"card\"\u003e\n    \u003cdiv class=\"card-icon\"\u003e💊\u003c\/div\u003e\n    \u003cdiv class=\"card-title\"\u003ePharma \u0026amp; Food QC\u003c\/div\u003e\n    \u003cdiv class=\"card-body\"\u003eMicrobial recovery from sanitized pharmaceutical surfaces and food\/dairy\/cosmetic samples post-sanitization. USP \u0026lt;51\u0026gt;; ISO 14644.\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"sh\"\u003eBCP Indicator System\u003c\/div\u003e\n\u003ctable class=\"kv\"\u003e\n  \u003ctr\u003e\n\u003ctd\u003eUninoculated \/ non-fermenters\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan class=\"bcp-p\"\u003ePurple\u003c\/span\u003e — neutral\/alkaline pH, no acid production\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eFermenters (glucose)\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan class=\"bcp-y\"\u003eYellow\u003c\/span\u003e — acid from glucose fermentation (pH drops below indicator pKa)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\n\u003cem\u003eE. coli\u003c\/em\u003e ATCC 25922\u003c\/td\u003e\n\u003ctd\u003eGood growth; \u003cspan class=\"bcp-y\"\u003eYellow\u003c\/span\u003e colonies (BCP positive fermentation)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\n\u003cem\u003eS. aureus\u003c\/em\u003e ATCC 25923\u003c\/td\u003e\n\u003ctd\u003eGood growth; \u003cspan class=\"bcp-y\"\u003eYellow\u003c\/span\u003e colonies (BCP positive fermentation)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\n\u003cem\u003eP. aeruginosa\u003c\/em\u003e ATCC 27853\u003c\/td\u003e\n\u003ctd\u003eGood growth; \u003cspan class=\"bcp-p\"\u003ePurple\u003c\/span\u003e\/unchanged (non-fermenter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cdiv class=\"sh\"\u003eIncubation \u0026amp; Use\u003c\/div\u003e\n\u003ctable class=\"kv\"\u003e\n  \u003ctr\u003e\n\u003ctd\u003eTemperature\u003c\/td\u003e\n\u003ctd\u003e35–37 °C (aerobic)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eDuration\u003c\/td\u003e\n\u003ctd\u003e40–48 hours; examine at 24 h and 48 h\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eContact plates\u003c\/td\u003e\n\u003ctd\u003ePress dome-shaped surface directly onto sampling area; incubate inverted at 35–37 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAir sampling\u003c\/td\u003e\n\u003ctd\u003eExpose open dome plate for defined time; incubate; count CFU\/m³ or CFU\/plate\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSuspension plating\u003c\/td\u003e\n\u003ctd\u003ePour 20–25 mL per plate (slight dome overfill for contact plates; standard 15–20 mL for enumeration)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cdiv class=\"sh\"\u003eStorage \u0026amp; Shelf Life\u003c\/div\u003e\n\u003ctable class=\"kv\"\u003e\n  \u003ctr\u003e\n\u003ctd\u003eDehydrated Medium\u003c\/td\u003e\n\u003ctd\u003e10–30 °C, tightly closed, protected from moisture, light, and humidity; stable until expiry (typically 3 years)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAfter Opening\u003c\/td\u003e\n\u003ctd\u003eReseal immediately; use desiccant to prevent hygroscopic lump formation\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePrepared Plates\u003c\/td\u003e\n\u003ctd\u003e2–8 °C, sealed plastic bags; use within 2–4 weeks\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eDo Not Use If\u003c\/td\u003e\n\u003ctd\u003eDehydrated, contaminated, discoloured, or overgrown prepared plates\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cdiv class=\"warn\"\u003e\n\u003cstrong\u003eFor laboratory and research use only.\u003c\/strong\u003e Not for diagnostic procedures without proper validation. Not for human or veterinary consumption. Handle under BSL-2; wear gloves, protective clothing, and eye protection. Autoclave all contaminated materials before disposal.\u003c\/div\u003e\n\u003cdiv class=\"disc\"\u003e\n\u003cstrong\u003eAuSaMicS Pty Ltd\u003c\/strong\u003e (ABN 56 676 640 467) · For laboratory use only. · 31 Longview CT, Thomastown VIC 3074, Australia · support@ausamics.com · +61 412 520 598 · www.ausamics.com.au\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- TAB 2: TDS --\u003e\n\u003cdiv class=\"pl\" id=\"dp-tds\"\u003e\n\u003cdiv class=\"two-col\"\u003e\n  \u003cdiv\u003e\n    \u003cdiv class=\"sh\"\u003eProduct Identification\u003c\/div\u003e\n    \u003ctable class=\"kv\"\u003e\n      \u003ctr\u003e\n\u003ctd\u003eProduct Name\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eD\/E Neutralizing Agar\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eFull Name\u003c\/td\u003e\n\u003ctd\u003eDey\/Engley Neutralizing Agar\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCat No.\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eAS-1190\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eLot No.\u003c\/td\u003e\n\u003ctd\u003eDEN260301\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMfg. Date\u003c\/td\u003e\n\u003ctd\u003eMarch 2026\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eRetest Date\u003c\/td\u003e\n\u003ctd\u003eMarch 2029\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eGrade\u003c\/td\u003e\n\u003ctd\u003eMicrobiological Grade\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n  \u003cdiv\u003e\n    \u003cdiv class=\"sh\"\u003ePhysical Properties\u003c\/div\u003e\n    \u003ctable class=\"kv\"\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAppearance (powder)\u003c\/td\u003e\n\u003ctd\u003ePale cream to beige; possible off-white particles (lecithin\/polysorbate — normal)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAppearance (prepared)\u003c\/td\u003e\n\u003ctd\u003eOpaque, \u003cspan class=\"bcp-p\" style=\"font-size:10px\"\u003epurple\u003c\/span\u003e to reddish-purple opalescent gel; fine white precipitate acceptable\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003epH (prepared, 25 °C)\u003c\/td\u003e\n\u003ctd\u003e7.6 ± 0.2\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAgar gel \/ melt\u003c\/td\u003e\n\u003ctd\u003eGels ~32–34 °C \/ Melts ~84–86 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eLoss on Drying\u003c\/td\u003e\n\u003ctd\u003e≤ 7.0% w\/w\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSuspension\u003c\/td\u003e\n\u003ctd\u003e54.02 g \/ L purified water\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"sh\"\u003eComposition per Litre\u003c\/div\u003e\n\u003ctable class=\"dt\"\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eComponent\u003c\/th\u003e\n\u003cth\u003eFunction\u003c\/th\u003e\n\u003cth\u003eAmount (g\/L)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTryptone\u003c\/td\u003e\n\u003ctd\u003eNitrogen, amino acids — primary nutrient source\u003c\/td\u003e\n\u003ctd\u003e5.0\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eYeast Extract\u003c\/td\u003e\n\u003ctd\u003eB vitamins, growth factors — supports stressed cell recovery\u003c\/td\u003e\n\u003ctd\u003e2.5\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDextrose (Glucose)\u003c\/td\u003e\n\u003ctd\u003eFermentable carbon source — energy; substrate for BCP indicator\u003c\/td\u003e\n\u003ctd\u003e10.0\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSodium Thiosulfate\u003c\/td\u003e\n\u003ctd\u003eNeutralises halogens (Cl\u0026amp;sub2;, I\u0026amp;sub2;, Br\u0026amp;sub2;)\u003c\/td\u003e\n\u003ctd\u003e6.0\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSodium Thioglycollate\u003c\/td\u003e\n\u003ctd\u003eNeutralises mercurials and metal-based biocides\u003c\/td\u003e\n\u003ctd\u003e1.0\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSodium Bisulfite\u003c\/td\u003e\n\u003ctd\u003eNeutralises aldehydes (glutaraldehyde, formaldehyde)\u003c\/td\u003e\n\u003ctd\u003e2.5\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eLecithin\u003c\/td\u003e\n\u003ctd\u003eNeutralises phenolics and membrane-active agents\u003c\/td\u003e\n\u003ctd\u003e7.0\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePolysorbate 80\u003c\/td\u003e\n\u003ctd\u003eNeutralises QACs and surface-active agents\u003c\/td\u003e\n\u003ctd\u003e5.0\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBromocresol Purple (BCP)\u003c\/td\u003e\n\u003ctd\u003epH indicator — \u003cspan class=\"bcp-p\" style=\"font-size:10px\"\u003ePurple\u003c\/span\u003e (neutral) → \u003cspan class=\"bcp-y\" style=\"font-size:10px\"\u003eYellow\u003c\/span\u003e (acid from fermentation)\u003c\/td\u003e\n\u003ctd\u003e0.02\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAgar\u003c\/td\u003e\n\u003ctd\u003eSolidifying agent\u003c\/td\u003e\n\u003ctd\u003e15.0\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTOTAL\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e54.02 g\/L\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cdiv class=\"sh\"\u003ePreparation Protocol\u003c\/div\u003e\n\u003col class=\"steps\"\u003e\n  \u003cli\u003e\n\u003cspan class=\"sn\"\u003e1\u003c\/span\u003e\u003cspan\u003eSuspend \u003cstrong\u003e54.02 g\u003c\/strong\u003e of dehydrated D\/E Neutralizing Agar in \u003cstrong\u003e1 L\u003c\/strong\u003e of purified water.\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cspan class=\"sn\"\u003e2\u003c\/span\u003e\u003cspan\u003eHeat with frequent agitation to boiling until completely dissolved. \u003cstrong\u003eDo not overheat\u003c\/strong\u003e — excessive boiling degrades neutralizing agents.\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cspan class=\"sn\"\u003e3\u003c\/span\u003e\u003cspan\u003eAutoclave at \u003cstrong\u003e121 °C (15 psi)\u003c\/strong\u003e for \u003cstrong\u003e15 minutes\u003c\/strong\u003e.\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cspan class=\"sn\"\u003e4\u003c\/span\u003e\u003cspan\u003eCool to \u003cstrong\u003e45–50 °C\u003c\/strong\u003e. Mix gently to resuspend any particulates (white precipitate from lecithin is \u003cstrong\u003enormal\u003c\/strong\u003e).\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cspan class=\"sn\"\u003e5\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eContact plates:\u003c\/strong\u003e Pour 20–25 mL per plate with slight overfill to create a dome shape for direct surface contact sampling.\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cspan class=\"sn\"\u003e6\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eStandard enumeration plates:\u003c\/strong\u003e Pour 15–20 mL per 90 mm Petri dish.\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cspan class=\"sn\"\u003e7\u003c\/span\u003e\u003cspan\u003eAllow to solidify at RT. Store at 2–8 °C in sealed bags. Use within 2–4 weeks.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cdiv class=\"sh\"\u003eQuality Control Specifications\u003c\/div\u003e\n\u003ctable class=\"dt\"\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eMethod\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAppearance (powder)\u003c\/td\u003e\n\u003ctd\u003eHomogeneous; cream to beige; no excessive lumping\u003c\/td\u003e\n\u003ctd\u003eVisual inspection\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003epH (prepared, 25 °C)\u003c\/td\u003e\n\u003ctd\u003e7.4 – 7.8\u003c\/td\u003e\n\u003ctd\u003ePotentiometry (ISO 10523)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eLoss on Drying\u003c\/td\u003e\n\u003ctd\u003e≤ 7.0% w\/w\u003c\/td\u003e\n\u003ctd\u003e105 °C \/ 2 h (gravimetric)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eColour (prepared)\u003c\/td\u003e\n\u003ctd\u003ePurple to reddish-purple opalescent gel\u003c\/td\u003e\n\u003ctd\u003eVisual — plate check\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eGrowth + BCP — \u003cem\u003eE. coli\u003c\/em\u003e ATCC 25922\u003c\/td\u003e\n\u003ctd\u003eGood growth; yellow colonies (BCP+ fermentation); 40–48 h at 37 °C\u003c\/td\u003e\n\u003ctd\u003eGrowth promotion + BCP test\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eGrowth + BCP — \u003cem\u003eS. aureus\u003c\/em\u003e ATCC 25923\u003c\/td\u003e\n\u003ctd\u003eGood growth; yellow colonies (BCP+ fermentation)\u003c\/td\u003e\n\u003ctd\u003eGrowth promotion + BCP test\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eGrowth + BCP — \u003cem\u003eP. aeruginosa\u003c\/em\u003e ATCC 27853\u003c\/td\u003e\n\u003ctd\u003eGood growth; purple\/unchanged (non-fermenter)\u003c\/td\u003e\n\u003ctd\u003eGrowth promotion + BCP test\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eNeutralizing efficacy (chlorine 200 ppm)\u003c\/td\u003e\n\u003ctd\u003e≥ 95% neutralization; recovery of viable \u003cem\u003eE. coli\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003eAOAC neutralizer performance\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eNeutralizing efficacy (QAC 400 ppm)\u003c\/td\u003e\n\u003ctd\u003e≥ 95% neutralization; recovery of viable \u003cem\u003eS. aureus\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003eAOAC neutralizer performance\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSterility (prepared medium)\u003c\/td\u003e\n\u003ctd\u003eNo growth at 14 days (35–37 °C)\u003c\/td\u003e\n\u003ctd\u003eIncubation sterility check\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cdiv class=\"sh\"\u003eTechnical References\u003c\/div\u003e\n\u003ctable class=\"kv\"\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePrimary Reference\u003c\/td\u003e\n\u003ctd\u003eDey B.P. \u0026amp; Engley F.B. (1970). Prototype formulation of a universal neutralizing medium. \u003cem\u003eJ AOAC\u003c\/em\u003e, 53(4):763–777\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAOAC Methods\u003c\/td\u003e\n\u003ctd\u003eAOAC 955.11 · 964.02 · 966.04 — Use-dilution methods for disinfectant efficacy\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eUSP Standards\u003c\/td\u003e\n\u003ctd\u003eUSP \u0026lt;51\u0026gt; Antimicrobial Effectiveness Testing · USP \u0026lt;61\u0026gt;\/\u0026lt;62\u0026gt; Microbiological Examination\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eISO Standards\u003c\/td\u003e\n\u003ctd\u003eISO 14698-1\/2 — Cleanroom environmental monitoring · ISO 4833 — Food microbiology\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eFDA Guidance\u003c\/td\u003e\n\u003ctd\u003eFDA Guidance for Aseptic Processing (2004) — environmental monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"disc\"\u003e\n\u003cstrong\u003eAuSaMicS Pty Ltd\u003c\/strong\u003e (ABN 56 676 640 467) · 31 Longview CT, Thomastown VIC 3074, Australia · support@ausamics.com · +61 412 520 598 · www.ausamics.com.au\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- TAB 3: SDS --\u003e\n\u003cdiv class=\"pl\" id=\"dp-sds\"\u003e\n\u003cdiv class=\"warn\"\u003e\n\u003cstrong\u003eSafety Data Sheet — GHS Format (Australian WHS Regulations 2017)\u003c\/strong\u003e\u003cbr\u003eIssue Date: March 2026 · Rev: 1.0\u003c\/div\u003e\n\u003cdiv class=\"danger\"\u003e\n\u003cstrong\u003eHazard Notice:\u003c\/strong\u003e This medium contains \u003cstrong\u003esodium bisulfite\u003c\/strong\u003e (H302 harmful if swallowed; H317 potential sensitiser) and \u003cstrong\u003esodium thioglycollate\u003c\/strong\u003e (H411 toxic to aquatic organisms). Handle with appropriate PPE. Inoculated medium: BSL-2 precautions apply.\u003c\/div\u003e\n\n\u003cdiv class=\"sh\"\u003eSection 1 — Identification\u003c\/div\u003e\n\u003ctable class=\"kv\"\u003e\n  \u003ctr\u003e\n\u003ctd\u003eProduct Name\u003c\/td\u003e\n\u003ctd\u003eD\/E Neutralizing Agar (Dey\/Engley) — AS-1190\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eOther Names\u003c\/td\u003e\n\u003ctd\u003eDE Neutralizing Agar; Dey-Engley Neutralizing Agar\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eIntended Use\u003c\/td\u003e\n\u003ctd\u003eMicrobiological culture medium for disinfectant neutralization — laboratory use only\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSupplier\u003c\/td\u003e\n\u003ctd\u003eAuSaMicS Pty Ltd, 31 Longview CT, Thomastown VIC 3074, Australia\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePhone \/ Emergency\u003c\/td\u003e\n\u003ctd\u003e+61 412 520 598 · Poisons Centre: 13 11 26 (24h)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eEmail \/ Web\u003c\/td\u003e\n\u003ctd\u003esupport@ausamics.com · www.ausamics.com.au\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cdiv class=\"sh\"\u003eSection 2 — Hazard Identification\u003c\/div\u003e\n\u003ctable class=\"kv\"\u003e\n  \u003ctr\u003e\n\u003ctd\u003eGHS Classification\u003c\/td\u003e\n\u003ctd\u003eH302 (sodium bisulfite — harmful if swallowed) · H317 (sodium bisulfite — may cause allergic skin reaction) · H319 (eye irritation) · H411 (sodium thioglycollate — toxic to aquatic organisms)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSignal Word\u003c\/td\u003e\n\u003ctd\u003eWarning\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePrecautionary\u003c\/td\u003e\n\u003ctd\u003eP260 · P264 · P270 · P280 · P301+P312 · P333+P313 · P391 · P501\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBiological Hazard\u003c\/td\u003e\n\u003ctd\u003eInoculated media: BSL-2 organisms possible. Wear gloves, lab coat, eye protection. Use BSC Class II for inoculated work.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cdiv class=\"sh\"\u003eSection 3 — Composition\u003c\/div\u003e\n\u003ctable class=\"dt\"\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eComponent\u003c\/th\u003e\n\u003cth\u003eCAS No.\u003c\/th\u003e\n\u003cth\u003eProportion (w\/w)\u003c\/th\u003e\n\u003cth\u003eGHS Classification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAgar (bacteriological)\u003c\/td\u003e\n\u003ctd\u003e9002-18-0\u003c\/td\u003e\n\u003ctd\u003e~27.8%\u003c\/td\u003e\n\u003ctd\u003eNot classified\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDextrose (Glucose)\u003c\/td\u003e\n\u003ctd\u003e50-99-7\u003c\/td\u003e\n\u003ctd\u003e~18.5%\u003c\/td\u003e\n\u003ctd\u003eNot classified\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eLecithin (soya)\u003c\/td\u003e\n\u003ctd\u003e8002-43-5\u003c\/td\u003e\n\u003ctd\u003e~13.0%\u003c\/td\u003e\n\u003ctd\u003eNot classified\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSodium Thiosulfate\u003c\/td\u003e\n\u003ctd\u003e10102-17-7\u003c\/td\u003e\n\u003ctd\u003e~11.1%\u003c\/td\u003e\n\u003ctd\u003eNot classified at supplied conc.\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePolysorbate 80\u003c\/td\u003e\n\u003ctd\u003e9005-65-6\u003c\/td\u003e\n\u003ctd\u003e~9.3%\u003c\/td\u003e\n\u003ctd\u003eNot classified\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSodium Bisulfite\u003c\/td\u003e\n\u003ctd\u003e7631-90-5\u003c\/td\u003e\n\u003ctd\u003e~4.6%\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eH302 · H317 · H319 · H335\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTryptone\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e~9.3%\u003c\/td\u003e\n\u003ctd\u003eNot classified\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eYeast Extract\u003c\/td\u003e\n\u003ctd\u003e8013-01-2\u003c\/td\u003e\n\u003ctd\u003e~4.6%\u003c\/td\u003e\n\u003ctd\u003eNot classified\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSodium Thioglycollate\u003c\/td\u003e\n\u003ctd\u003e367-51-1\u003c\/td\u003e\n\u003ctd\u003e~1.9%\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eH302 · H312 · H332 · H411\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBromocresol Purple\u003c\/td\u003e\n\u003ctd\u003e115-40-2\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.1%\u003c\/td\u003e\n\u003ctd\u003eNot classified at supplied conc.\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cdiv class=\"sh\"\u003eSections 4–8 — First Aid, Fire, Spill, Handling, PPE\u003c\/div\u003e\n\u003ctable class=\"kv\"\u003e\n  \u003ctr\u003e\n\u003ctd\u003eInhalation\u003c\/td\u003e\n\u003ctd\u003eRemove to fresh air. Sodium bisulfite dust: potential sensitiser — seek advice if symptomatic.\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSkin Contact\u003c\/td\u003e\n\u003ctd\u003eWash with soap and water ≥ 15 min. Sodium bisulfite: H317 sensitiser — seek advice if reaction develops.\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eEye Contact\u003c\/td\u003e\n\u003ctd\u003eRinse immediately with copious water ≥ 15 min. Seek medical attention.\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eIngestion\u003c\/td\u003e\n\u003ctd\u003eDo not induce vomiting. Rinse mouth. Sodium bisulfite H302 — seek medical advice. Contact Poisons Centre: 13 11 26.\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eFlash Point\u003c\/td\u003e\n\u003ctd\u003eNot applicable (non-flammable powder). H\u0026amp;sub2;S possible from thioglycollate on strong heating.\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSpill (chemical)\u003c\/td\u003e\n\u003ctd\u003eAvoid dust. Collect with HEPA vacuum or damp cloth. Dispose per Section 13.\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSpill (inoculated)\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eBIOHAZARD:\u003c\/strong\u003e Apply 1% hypochlorite; contact time ≥ 30 min. Autoclave all waste. Report per biosafety policy.\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eEngineering Controls\u003c\/td\u003e\n\u003ctd\u003eLocal exhaust ventilation when weighing. BSC Class II for all inoculated work.\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eRespiratory PPE\u003c\/td\u003e\n\u003ctd\u003eP2 \/ FFP2 dust mask when generating significant dust (sodium bisulfite sensitiser)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eHand Protection\u003c\/td\u003e\n\u003ctd\u003eNitrile gloves — double-glove for inoculated work\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eEye \/ Face\u003c\/td\u003e\n\u003ctd\u003eSafety glasses; splash goggles for inoculated work\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eBiosafety Level\u003c\/td\u003e\n\u003ctd\u003eBSL-2 containment required per AS\/NZS 2243.3:2010 when culturing potentially pathogenic organisms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cdiv class=\"sh\"\u003eSections 9–16 — Properties, Stability, Toxicology, Disposal, Regulatory\u003c\/div\u003e\n\u003ctable class=\"kv\"\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePhysical State\u003c\/td\u003e\n\u003ctd\u003eSolid (powder); opaque purple-reddish gel when prepared\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003epH (prepared)\u003c\/td\u003e\n\u003ctd\u003e7.6 ± 0.2\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eStability\u003c\/td\u003e\n\u003ctd\u003eStable at 10–30 °C, dry, protected. Incompatible with strong oxidising agents; concentrated acids (releases SO\u0026amp;sub2; from bisulfite).\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAcute Oral Toxicity\u003c\/td\u003e\n\u003ctd\u003eSodium bisulfite H302 — harmful if swallowed at high dose. Others: low acute toxicity (GRAS components).\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSkin Sensitisation\u003c\/td\u003e\n\u003ctd\u003eSodium bisulfite H317 — may cause allergic skin reaction in sensitised individuals. Apply ALARA.\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAquatic Toxicity\u003c\/td\u003e\n\u003ctd\u003eSodium thioglycollate H411 — toxic to aquatic organisms with long-lasting effects. Prevent discharge to waterways.\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWaste Disposal\u003c\/td\u003e\n\u003ctd\u003eInoculated medium: autoclave 121 °C \/ 30 min as biohazardous waste. Uninoculated: autoclave then dispose as chemical waste. Sodium thioglycollate — environmental hazard; licensed contractor for bulk disposal.\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eTransport\u003c\/td\u003e\n\u003ctd\u003eNot regulated as dangerous goods in standard laboratory quantities. Sodium thioglycollate: check regulations for bulk commercial shipments.\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAICS (Australia)\u003c\/td\u003e\n\u003ctd\u003eAll components listed on Australian Inventory of Chemical Substances\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSUSMP Schedule\u003c\/td\u003e\n\u003ctd\u003eNot scheduled for laboratory use\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWHS Regulations\u003c\/td\u003e\n\u003ctd\u003eContains hazardous chemicals (sodium bisulfite H302\/H317; sodium thioglycollate H411) — WHS Regulations 2017 apply\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eSDS Prepared By\u003c\/td\u003e\n\u003ctd\u003eAuSaMicS Pty Ltd — Technical \u0026amp; Quality Department · March 2026 · Rev 1.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cdiv class=\"disc\"\u003e\n\u003cstrong\u003eAuSaMicS Pty Ltd\u003c\/strong\u003e (ABN 56 676 640 467) · 31 Longview CT, Thomastown VIC 3074, Australia · support@ausamics.com · +61 412 520 598 · www.ausamics.com.au\u003cbr\u003eThis SDS is prepared in accordance with Australian WHS Regulations and GHS (7th Rev.). For laboratory use only.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- TAB 4: COA --\u003e\n\u003cdiv class=\"pl\" id=\"dp-coa\"\u003e\n\u003cdiv class=\"two-col\"\u003e\n  \u003cdiv\u003e\n    \u003cdiv class=\"sh\"\u003eProduct Details\u003c\/div\u003e\n    \u003ctable class=\"kv\"\u003e\n      \u003ctr\u003e\n\u003ctd\u003eProduct Name\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eD\/E Neutralizing Agar\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCatalog No.\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eAS-1190\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eLot No.\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDEN260301\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMfg. Date\u003c\/td\u003e\n\u003ctd\u003eMarch 2026\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eRetest Date\u003c\/td\u003e\n\u003ctd\u003eMarch 2029\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eGrade\u003c\/td\u003e\n\u003ctd\u003eMicrobiological Grade\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n  \u003cdiv\u003e\n    \u003cdiv class=\"sh\"\u003eDocument Information\u003c\/div\u003e\n    \u003ctable class=\"kv\"\u003e\n      \u003ctr\u003e\n\u003ctd\u003eCOA No.\u003c\/td\u003e\n\u003ctd\u003eCOA-AS-1190-L001\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eIssue Date\u003c\/td\u003e\n\u003ctd\u003eMarch 2026\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eIssued By\u003c\/td\u003e\n\u003ctd\u003eAuSaMicS Quality Control\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTest Ref.\u003c\/td\u003e\n\u003ctd\u003eISO 11133 \/ AOAC \/ USP \u0026lt;61\u0026gt;\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"sh\"\u003eTest Results \u0026amp; Analytical Data\u003c\/div\u003e\n\u003ctable class=\"dt\"\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eTest Parameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eMethod\u003c\/th\u003e\n\u003cth\u003eResult\u003c\/th\u003e\n\u003cth style=\"text-align:center\"\u003eStatus\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAppearance (powder)\u003c\/td\u003e\n\u003ctd\u003eHomogeneous; cream to beige; no excessive lumping\u003c\/td\u003e\n\u003ctd\u003eVisual inspection\u003c\/td\u003e\n\u003ctd\u003eConforms\u003c\/td\u003e\n\u003ctd style=\"text-align:center\"\u003e\u003cspan class=\"pass\"\u003ePASS\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eColour (prepared medium)\u003c\/td\u003e\n\u003ctd\u003ePurple to reddish-purple opalescent gel\u003c\/td\u003e\n\u003ctd\u003eVisual — plate check\u003c\/td\u003e\n\u003ctd\u003eConforms\u003c\/td\u003e\n\u003ctd style=\"text-align:center\"\u003e\u003cspan class=\"pass\"\u003ePASS\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003epH (prepared, 25 °C)\u003c\/td\u003e\n\u003ctd\u003e7.4 – 7.8\u003c\/td\u003e\n\u003ctd\u003ePotentiometry (ISO 10523)\u003c\/td\u003e\n\u003ctd\u003e7.6\u003c\/td\u003e\n\u003ctd style=\"text-align:center\"\u003e\u003cspan class=\"pass\"\u003ePASS\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eGel strength (prepared)\u003c\/td\u003e\n\u003ctd\u003eFirm gel; opalescence and white precipitate acceptable\u003c\/td\u003e\n\u003ctd\u003eVisual — plate check\u003c\/td\u003e\n\u003ctd\u003eFirm\u003c\/td\u003e\n\u003ctd style=\"text-align:center\"\u003e\u003cspan class=\"pass\"\u003ePASS\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eLoss on Drying\u003c\/td\u003e\n\u003ctd\u003e≤ 7.0% w\/w\u003c\/td\u003e\n\u003ctd\u003e105 °C \/ 2 h (gravimetric)\u003c\/td\u003e\n\u003ctd\u003e4.2%\u003c\/td\u003e\n\u003ctd style=\"text-align:center\"\u003e\u003cspan class=\"pass\"\u003ePASS\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSolubility (54.02 g\/L)\u003c\/td\u003e\n\u003ctd\u003eComplete dissolution with heating + agitation\u003c\/td\u003e\n\u003ctd\u003eSuspension + heating\u003c\/td\u003e\n\u003ctd\u003eComplete\u003c\/td\u003e\n\u003ctd style=\"text-align:center\"\u003e\u003cspan class=\"pass\"\u003ePASS\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBCP indicator (pH shift)\u003c\/td\u003e\n\u003ctd\u003ePurple → Yellow upon acid production from glucose\u003c\/td\u003e\n\u003ctd\u003eFermentation test (\u003cem\u003eE. coli\u003c\/em\u003e)\u003c\/td\u003e\n\u003ctd\u003ePositive\u003c\/td\u003e\n\u003ctd style=\"text-align:center\"\u003e\u003cspan class=\"pass\"\u003ePASS\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eGrowth — \u003cem\u003eE. coli\u003c\/em\u003e ATCC 25922\u003c\/td\u003e\n\u003ctd\u003eGood growth; yellow colonies (BCP+); 40–48 h at 37 °C\u003c\/td\u003e\n\u003ctd\u003eGrowth promotion test\u003c\/td\u003e\n\u003ctd\u003eGood growth\u003c\/td\u003e\n\u003ctd style=\"text-align:center\"\u003e\u003cspan class=\"pass\"\u003ePASS\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eGrowth — \u003cem\u003eS. aureus\u003c\/em\u003e ATCC 25923\u003c\/td\u003e\n\u003ctd\u003eGood growth; yellow colonies (BCP+); 40–48 h at 37 °C\u003c\/td\u003e\n\u003ctd\u003eGrowth promotion test\u003c\/td\u003e\n\u003ctd\u003eGood growth\u003c\/td\u003e\n\u003ctd style=\"text-align:center\"\u003e\u003cspan class=\"pass\"\u003ePASS\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eGrowth — \u003cem\u003eP. aeruginosa\u003c\/em\u003e ATCC 27853\u003c\/td\u003e\n\u003ctd\u003eGood growth; purple\/unchanged (non-fermenter)\u003c\/td\u003e\n\u003ctd\u003eGrowth promotion test\u003c\/td\u003e\n\u003ctd\u003eGood growth\u003c\/td\u003e\n\u003ctd style=\"text-align:center\"\u003e\u003cspan class=\"pass\"\u003ePASS\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eNeutralizing efficacy — chlorine (200 ppm)\u003c\/td\u003e\n\u003ctd\u003e≥ 95% neutralization; recovery of viable \u003cem\u003eE. coli\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003eAOAC neutralizer performance\u003c\/td\u003e\n\u003ctd\u003e≥ 95%\u003c\/td\u003e\n\u003ctd style=\"text-align:center\"\u003e\u003cspan class=\"pass\"\u003ePASS\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eNeutralizing efficacy — QAC (400 ppm)\u003c\/td\u003e\n\u003ctd\u003e≥ 95% neutralization; recovery of viable \u003cem\u003eS. aureus\u003c\/em\u003e\n\u003c\/td\u003e\n\u003ctd\u003eAOAC neutralizer performance\u003c\/td\u003e\n\u003ctd\u003e≥ 95%\u003c\/td\u003e\n\u003ctd style=\"text-align:center\"\u003e\u003cspan class=\"pass\"\u003ePASS\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSterility (prepared medium)\u003c\/td\u003e\n\u003ctd\u003eNo growth at 14 days (35–37 °C)\u003c\/td\u003e\n\u003ctd\u003eIncubation sterility check\u003c\/td\u003e\n\u003ctd\u003eNo growth\u003c\/td\u003e\n\u003ctd style=\"text-align:center\"\u003e\u003cspan class=\"pass\"\u003ePASS\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eISO 11133 \/ AOAC Compliance\u003c\/td\u003e\n\u003ctd\u003eFull conformance with D\/E neutralizing agar performance criteria\u003c\/td\u003e\n\u003ctd\u003eCompositional + performance review\u003c\/td\u003e\n\u003ctd\u003eConforms\u003c\/td\u003e\n\u003ctd style=\"text-align:center\"\u003e\u003cspan class=\"conform\"\u003eCONFORM\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cdiv class=\"concl\"\u003e\n  \u003cstrong style=\"color:#1A4731\"\u003eConclusion:\u003c\/strong\u003e Lot DEN260301 fully meets all release specifications for D\/E Neutralizing Agar. Neutralizing efficacy confirmed for halogens and QACs. Growth promotion and BCP indicator system verified with \u003cem\u003eE. coli\u003c\/em\u003e ATCC 25922, \u003cem\u003eS. aureus\u003c\/em\u003e ATCC 25923, and \u003cem\u003eP. aeruginosa\u003c\/em\u003e ATCC 27853. This lot is \u003cstrong style=\"color:#1A4731\"\u003eRELEASED for use\u003c\/strong\u003e.\n\u003c\/div\u003e\n\n\u003cdiv class=\"sig\"\u003e\n  \u003cdiv class=\"sigb\"\u003e\n    \u003cdiv class=\"sname\"\u003eQuality Control Analyst\u003c\/div\u003e\n    \u003cdiv class=\"srole\"\u003eAuSaMicS Quality Control Department\u003c\/div\u003e\n    \u003cdiv class=\"sdate\"\u003eDate: March 2026  |  Signature: _______________\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"sigb\"\u003e\n    \u003cdiv class=\"sname\"\u003eQuality Manager\u003c\/div\u003e\n    \u003cdiv class=\"srole\"\u003eAuSaMicS Pty Ltd\u003c\/div\u003e\n    \u003cdiv class=\"sdate\"\u003eDate: March 2026  |  Signature: _______________\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"disc\"\u003e\n\u003cstrong\u003eAuSaMicS Pty Ltd\u003c\/strong\u003e (ABN 56 676 640 467) warrants this product meets specifications at time of manufacture. For laboratory and research use only. Not for diagnostic procedures without proper validation. · 31 Longview CT, Thomastown VIC 3074, Australia · support@ausamics.com · +61 412 520 598 · www.ausamics.com.au\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c!-- \/.pls --\u003e\n\u003cdiv class=\"foot\"\u003eAuSaMicS Pty Ltd  ·  ABN 56 676 640 467  ·  31 Longview CT, Thomastown VIC 3074, Australia  ·  support@ausamics.com  ·  +61 412 520 598  ·  www.ausamics.com.au\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Ausamics Life Science","offers":[{"title":"Default Title","offer_id":48030969594111,"sku":"AS-1190-500G","price":125.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/1087\/0271\/files\/DENeutralizingAgar.png?v=1773813864","url":"https:\/\/ausamics.com.au\/products\/d-e-neutralizing-agar","provider":"AuSaMicS","version":"1.0","type":"link"}