{"product_id":"d-e-neutralizing-broth","title":"D\/E Neutralizing Broth - Dey\/Engley Neutralizing Broth | AOAC\/USP\/ISO Compatible","description":"\u003ch3\u003eD\/E Neutralizing Broth \u003c\/h3\u003e\n\u003ch3\u003eCat No.: AS-1191\u003c\/h3\u003e\n\u003ch4 data-start=\"358\" data-end=\"392\"\u003eWhat is D\/E Neutralizing Broth?\u003c\/h4\u003e\n\u003ch4 data-start=\"394\" data-end=\"678\"\u003eD\/E Neutralizing Broth is a broad-spectrum disinfectant neutralization medium used to recover microorganisms exposed to antiseptics, sanitizers, and preservatives. It is specifically formulated for environmental monitoring, disinfectant validation, and antimicrobial efficacy testing.\u003c\/h4\u003e\n\u003cp data-start=\"680\" data-end=\"836\"\u003eOriginally developed by Dey and Engley (1970), this medium neutralizes residual disinfectants while preserving the viability of stressed bacteria and fungi.\u003c\/p\u003e\n\u003chr data-start=\"838\" data-end=\"841\"\u003e\n\u003ch4 data-start=\"843\" data-end=\"890\"\u003eWhat Does D\/E Neutralizing Broth Neutralize?\u003c\/h4\u003e\n\u003cp data-start=\"892\" data-end=\"959\"\u003eThis formulation inactivates common disinfectant classes including:\u003c\/p\u003e\n\u003cul data-start=\"961\" data-end=\"1120\"\u003e\n\u003cli data-start=\"961\" data-end=\"1001\"\u003e\n\u003cp data-start=\"963\" data-end=\"1001\"\u003eQuaternary ammonium compounds (QACs)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1002\" data-end=\"1028\"\u003e\n\u003cp data-start=\"1004\" data-end=\"1028\"\u003ePhenolic disinfectants\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1029\" data-end=\"1060\"\u003e\n\u003cp data-start=\"1031\" data-end=\"1060\"\u003eHalogens (chlorine, iodine)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1061\" data-end=\"1105\"\u003e\n\u003cp data-start=\"1063\" data-end=\"1105\"\u003eAldehydes (formaldehyde, glutaraldehyde)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1106\" data-end=\"1120\"\u003e\n\u003cp data-start=\"1108\" data-end=\"1120\"\u003eMercurials\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1122\" data-end=\"1157\"\u003eNeutralization is achieved through:\u003c\/p\u003e\n\u003cul data-start=\"1159\" data-end=\"1398\"\u003e\n\u003cli data-start=\"1159\" data-end=\"1224\"\u003e\n\u003cp data-start=\"1161\" data-end=\"1224\"\u003e\u003cstrong data-start=\"1161\" data-end=\"1190\"\u003eLecithin \u0026amp; Polysorbate 80\u003c\/strong\u003e – neutralize QACs and phenolics\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1225\" data-end=\"1285\"\u003e\n\u003cp data-start=\"1227\" data-end=\"1285\"\u003e\u003cstrong data-start=\"1227\" data-end=\"1249\"\u003eSodium Thiosulfate\u003c\/strong\u003e – neutralizes chlorine and iodine\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1286\" data-end=\"1334\"\u003e\n\u003cp data-start=\"1288\" data-end=\"1334\"\u003e\u003cstrong data-start=\"1288\" data-end=\"1308\"\u003eSodium Bisulfite\u003c\/strong\u003e – neutralizes aldehydes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1335\" data-end=\"1398\"\u003e\n\u003cp data-start=\"1337\" data-end=\"1398\"\u003e\u003cstrong data-start=\"1337\" data-end=\"1362\"\u003eSodium Thioglycollate\u003c\/strong\u003e – neutralizes mercurial compounds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1400\" data-end=\"1403\"\u003e\n\u003ch3 data-start=\"1405\" data-end=\"1439\"\u003eWhy Use D\/E Neutralizing Broth?\u003c\/h3\u003e\n\u003cp data-start=\"1441\" data-end=\"1644\"\u003eD\/E Broth is used when accurate microbial recovery is required after exposure to disinfectants. Without neutralization, residual sanitizer activity may suppress growth and produce false-negative results.\u003c\/p\u003e\n\u003cp data-start=\"1646\" data-end=\"1667\"\u003eIt is widely used in:\u003c\/p\u003e\n\u003cul data-start=\"1669\" data-end=\"1883\"\u003e\n\u003cli data-start=\"1669\" data-end=\"1720\"\u003e\n\u003cp data-start=\"1671\" data-end=\"1720\"\u003eHospital and cleanroom environmental monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1721\" data-end=\"1763\"\u003e\n\u003cp data-start=\"1723\" data-end=\"1763\"\u003ePharmaceutical disinfectant validation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1764\" data-end=\"1806\"\u003e\n\u003cp data-start=\"1766\" data-end=\"1806\"\u003eFood and dairy sanitation verification\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1807\" data-end=\"1840\"\u003e\n\u003cp data-start=\"1809\" data-end=\"1840\"\u003eCosmetic preservative testing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1841\" data-end=\"1883\"\u003e\n\u003cp data-start=\"1843\" data-end=\"1883\"\u003eWater system microbial control studies\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1885\" data-end=\"1888\"\u003e\n\u003ch3 data-start=\"1890\" data-end=\"1924\"\u003eHow Does Growth Detection Work?\u003c\/h3\u003e\n\u003cp data-start=\"1926\" data-end=\"2007\"\u003eBecause of the high lecithin content, turbidity may not reliably indicate growth.\u003c\/p\u003e\n\u003cp data-start=\"2009\" data-end=\"2040\"\u003eInstead, growth is detected by:\u003c\/p\u003e\n\u003cul data-start=\"2042\" data-end=\"2187\"\u003e\n\u003cli data-start=\"2042\" data-end=\"2114\"\u003e\n\u003cp data-start=\"2044\" data-end=\"2114\"\u003e\u003cstrong data-start=\"2044\" data-end=\"2079\"\u003eColor change (purple to yellow)\u003c\/strong\u003e via bromocresol purple indicator\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2115\" data-end=\"2187\"\u003e\n\u003cp data-start=\"2117\" data-end=\"2187\"\u003e\u003cstrong data-start=\"2117\" data-end=\"2139\"\u003ePellicle formation\u003c\/strong\u003e in certain organisms (e.g., Pseudomonas spp.)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2189\" data-end=\"2192\"\u003e\n\u003ch3 data-start=\"2194\" data-end=\"2227\"\u003eRegulatory \u0026amp; Testing Standards\u003c\/h3\u003e\n\u003cp data-start=\"2229\" data-end=\"2299\"\u003eD\/E Neutralizing Broth is suitable for use in procedures aligned with:\u003c\/p\u003e\n\u003cul data-start=\"2301\" data-end=\"2480\"\u003e\n\u003cli data-start=\"2301\" data-end=\"2330\"\u003e\n\u003cp data-start=\"2303\" data-end=\"2330\"\u003eAOAC disinfectant testing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2331\" data-end=\"2379\"\u003e\n\u003cp data-start=\"2333\" data-end=\"2379\"\u003eUSP \u0026lt;51\u0026gt; Antimicrobial Effectiveness Testing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2380\" data-end=\"2421\"\u003e\n\u003cp data-start=\"2382\" data-end=\"2421\"\u003eUSP \u0026lt;61\u0026gt; \/ \u0026lt;62\u0026gt; Microbial Enumeration\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2422\" data-end=\"2460\"\u003e\n\u003cp data-start=\"2424\" data-end=\"2460\"\u003eISO 14698 Environmental Monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2461\" data-end=\"2480\"\u003e\n\u003cp data-start=\"2463\" data-end=\"2480\"\u003eFDA-BAM methods\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2482\" data-end=\"2485\"\u003e\n\u003ch3 data-start=\"2487\" data-end=\"2513\"\u003eComposition (per liter)\u003c\/h3\u003e\n\u003cul data-start=\"2515\" data-end=\"2757\"\u003e\n\u003cli data-start=\"2515\" data-end=\"2535\"\u003e\n\u003cp data-start=\"2517\" data-end=\"2535\"\u003eTryptone – 5.0 g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2536\" data-end=\"2561\"\u003e\n\u003cp data-start=\"2538\" data-end=\"2561\"\u003eYeast Extract – 2.5 g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2562\" data-end=\"2583\"\u003e\n\u003cp data-start=\"2564\" data-end=\"2583\"\u003eDextrose – 10.0 g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2584\" data-end=\"2617\"\u003e\n\u003cp data-start=\"2586\" data-end=\"2617\"\u003eSodium Thioglycollate – 1.0 g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2618\" data-end=\"2648\"\u003e\n\u003cp data-start=\"2620\" data-end=\"2648\"\u003eSodium Thiosulfate – 6.0 g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2649\" data-end=\"2677\"\u003e\n\u003cp data-start=\"2651\" data-end=\"2677\"\u003eSodium Bisulfite – 2.5 g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2678\" data-end=\"2698\"\u003e\n\u003cp data-start=\"2680\" data-end=\"2698\"\u003eLecithin – 7.0 g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2699\" data-end=\"2725\"\u003e\n\u003cp data-start=\"2701\" data-end=\"2725\"\u003ePolysorbate 80 – 5.0 g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2726\" data-end=\"2757\"\u003e\n\u003cp data-start=\"2728\" data-end=\"2757\"\u003eBromocresol Purple – 0.02 g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2759\" data-end=\"2788\"\u003eFinal pH: 7.6 ± 0.2 at 25°C\u003c\/p\u003e\n\u003chr data-start=\"2790\" data-end=\"2793\"\u003e\n\u003ch2 data-start=\"2795\" data-end=\"2822\"\u003ePreparation Instructions\u003c\/h2\u003e\n\u003cp data-start=\"2824\" data-end=\"2999\"\u003eSuspend 39.02 g in 1 liter of purified water.\u003cbr data-start=\"2869\" data-end=\"2872\"\u003eHeat with agitation until fully dissolved (do not overheat).\u003cbr data-start=\"2932\" data-end=\"2935\"\u003eAutoclave at 121°C for 15 minutes.\u003cbr data-start=\"2969\" data-end=\"2972\"\u003eCool to 45–50°C before use.\u003c\/p\u003e\n\u003cp data-start=\"3001\" data-end=\"3071\"\u003ePrepared medium should appear clear to slightly opalescent and purple.\u003c\/p\u003e\n\u003chr data-start=\"3073\" data-end=\"3076\"\u003e\n\u003ch3 data-start=\"3078\" data-end=\"3099\"\u003eStorage Conditions\u003c\/h3\u003e\n\u003cp data-start=\"3101\" data-end=\"3274\"\u003eDehydrated medium: Store at 10–30°C in a tightly closed container, protected from moisture and light.\u003cbr data-start=\"3202\" data-end=\"3205\"\u003ePrepared broth: Store at 15–25°C and use within validated shelf life.\u003c\/p\u003e\n\u003chr data-start=\"3276\" data-end=\"3279\"\u003e\n\u003ch3 data-start=\"3281\" data-end=\"3300\"\u003eImportant Notice\u003c\/h3\u003e\n\u003cp data-start=\"3302\" data-end=\"3456\"\u003eFor laboratory and research use only.\u003cbr data-start=\"3339\" data-end=\"3342\"\u003eNot for human or veterinary consumption.\u003cbr data-start=\"3382\" data-end=\"3385\"\u003eValidate performance for specific strains beyond standard QC organisms.\u003c\/p\u003e\n\u003chr data-start=\"3458\" data-end=\"3461\"\u003e\n\u003cp data-start=\"3793\" data-end=\"3830\"\u003e \u003c\/p\u003e","brand":"Ausamics Life Science","offers":[{"title":"100 g","offer_id":48174199603455,"sku":"AS-1191-100G","price":45.0,"currency_code":"AUD","in_stock":true},{"title":"500 g","offer_id":48174199636223,"sku":"AS-1191-500G","price":135.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/1087\/0271\/files\/ausamics-d-e-neutralizing-broth-dey-engley-neutralizing-broth-cat-no-as-1191-powder.png?v=1771324269","url":"https:\/\/ausamics.com.au\/products\/d-e-neutralizing-broth","provider":"AuSaMicS","version":"1.0","type":"link"}