{"product_id":"tryptone-sulfite-neomycin-agar-tsn-agar","title":"TSN Agar (Tryptone Sulfite Neomycin) | AS-1404 | AuSaMicS","description":"\u003cdiv id=\"bn-as1404\"\u003e\n\n\u003cstyle\u003e\n[id^=\"bn-\"]{\n  --g1:#1F3A5F;--g2:#355C8A;--ga:#EEF4FA;--gb:#F7FAFD;\n  --bk:#111827;--ch:#374151;--gx:#6B7280;--lt:#E5E7EB;--wh:#FFFFFF;\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;line-height:1.5;\n}\n[id^=\"bn-\"] .r{position:absolute;opacity:0;pointer-events:none;width:0;height:0}\n[id^=\"bn-\"] .hdr{background:var(--g1);padding:24px 32px 20px;display:flex;align-items:flex-start;justify-content:space-between;gap:24px}\n[id^=\"bn-\"] .hdr-l{flex:1}\n[id^=\"bn-\"] .cat{font-size:10px;font-weight:700;letter-spacing:.12em;color:#BFD6F2;text-transform:uppercase;margin-bottom:6px}\n[id^=\"bn-\"] 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.sl{font-size:9px;font-weight:700;color:var(--gx);letter-spacing:.1em;text-transform:uppercase;margin-bottom:3px}\n[id^=\"bn-\"] .sv{font-size:12.5px;font-weight:700;color:var(--bk)}\n[id^=\"bn-\"] .tabs{display:flex;flex-wrap:wrap;border-bottom:2px solid var(--lt)}\n[id^=\"bn-\"] .tl{padding:12px 22px;font-size:12px;font-weight:600;cursor:pointer;color:var(--gx);border-bottom:2px solid transparent;margin-bottom:-2px;transition:all 0.2s}\n[id^=\"bn-\"] .tl:hover{color:var(--g2)}\n[id^=\"bn-\"] .pls .pl{display:none;padding:28px 32px 36px}\n[id^=\"bn-\"] .sh{font-size:10px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--wh);background:var(--g1);padding:5px 12px;margin:24px 0 12px;display:inline-block}\n[id^=\"bn-\"] .sh:first-child{margin-top:0}\n[id^=\"bn-\"] p{font-size:13.5px;color:var(--ch);line-height:1.75;margin:0 0 14px}\n[id^=\"bn-\"] .kv{width:100%;border-collapse:collapse;margin-bottom:18px;font-size:13px}\n[id^=\"bn-\"] .kv tr{border-bottom:1px solid var(--lt)}\n[id^=\"bn-\"] .kv td{padding:7px 12px 7px 0;vertical-align:top}\n[id^=\"bn-\"] .kv td:first-child{width:32%;font-weight:600;color:var(--gx);padding-right:18px}\n[id^=\"bn-\"] .dt-wrapper{overflow-x:auto}\n[id^=\"bn-\"] .dt{width:100%;border-collapse:collapse;font-size:12.5px;margin-bottom:18px;min-width:550px}\n[id^=\"bn-\"] .dt thead tr{background:var(--g1)}\n[id^=\"bn-\"] .dt thead th{color:var(--wh);padding:8px 12px;text-align:left;font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}\n[id^=\"bn-\"] .dt tbody td{padding:7px 12px;border-bottom:1px solid var(--lt);color:var(--ch)}\n[id^=\"bn-\"] .cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:22px}\n[id^=\"bn-\"] .card{border:1px solid var(--lt);border-top:3px solid var(--g2);padding:16px;border-radius:2px;background:var(--wh)}\n[id^=\"bn-\"] .card-t{font-size:11px;font-weight:700;color:var(--g1);text-transform:uppercase;letter-spacing:.08em;margin-bottom:7px}\n[id^=\"bn-\"] .card-b{font-size:12.5px;color:var(--ch);line-height:1.6}\n[id^=\"bn-\"] .disc{margin-top:30px;border:1px solid var(--lt);padding:14px 18px;font-size:11px;color:var(--gx);line-height:1.65;font-style:italic;background:var(--gb)}\n[id^=\"bn-\"] .foot{border-top:1px solid var(--lt);padding:12px 32px;font-size:11px;color:var(--gx);text-align:center;background:var(--gb)}\n\n\/* Tab Logic *\/\n#bn-as1404 #tab-pd:checked ~ .tabs [for=\"tab-pd\"],\n#bn-as1404 #tab-prep:checked ~ .tabs [for=\"tab-prep\"],\n#bn-as1404 #tab-tech:checked ~ .tabs [for=\"tab-tech\"],\n#bn-as1404 #tab-docs:checked ~ .tabs [for=\"tab-docs\"] {color:var(--g1);border-bottom-color:var(--g1);background:var(--ga)}\n\n#bn-as1404 #tab-pd:checked ~ .pls #panel-pd,\n#bn-as1404 #tab-prep:checked ~ .pls #panel-prep,\n#bn-as1404 #tab-tech:checked ~ .pls #panel-tech,\n#bn-as1404 #tab-docs:checked ~ .pls #panel-docs {display:block}\n\n@media(max-width:640px){\n  [id^=\"bn-\"] .hdr{flex-direction:column;padding:18px 20px}\n  [id^=\"bn-\"] .strip{grid-template-columns:repeat(2,1fr)}\n  [id^=\"bn-\"] .si:last-child{border-right:1px solid var(--lt)}\n  [id^=\"bn-\"] .pls .pl{padding:20px}\n  [id^=\"bn-\"] .cards{grid-template-columns:1fr}\n}\n\u003c\/style\u003e\n\n\u003cinput class=\"r\" type=\"radio\" name=\"as1404-tabs\" id=\"tab-pd\" checked\u003e\n\u003cinput class=\"r\" type=\"radio\" name=\"as1404-tabs\" id=\"tab-prep\"\u003e\n\u003cinput class=\"r\" type=\"radio\" name=\"as1404-tabs\" id=\"tab-tech\"\u003e\n\u003cinput class=\"r\" type=\"radio\" name=\"as1404-tabs\" id=\"tab-docs\"\u003e\n\n\u003cdiv class=\"hdr\"\u003e\n  \u003cdiv class=\"hdr-l\"\u003e\n    \u003cdiv class=\"cat\"\u003eMicrobiological Culture Media · Food Safety · Anaerobic Bacteriology\u003c\/div\u003e\n    \u003cdiv class=\"pname\"\u003eTSN Agar (Tryptone Sulfite Neomycin)\u003c\/div\u003e\n    \u003cdiv class=\"psub\"\u003eSelective isolation and enumeration of \u003cem\u003eClostridium perfringens\u003c\/em\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"badges\"\u003e\n      \u003cspan class=\"badge\"\u003eSelective Medium\u003c\/span\u003e\n      \u003cspan class=\"badge\"\u003eH₂S Indicator\u003c\/span\u003e\n      \u003cspan class=\"badge\"\u003eStandardized Formula\u003c\/span\u003e\n      \u003cspan class=\"badge\"\u003eBatch Traceable\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\"\u003eLaboratory Division\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-1404\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\"\u003e7.2 ± 0.2\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"si\"\u003e\n\u003cdiv class=\"sl\"\u003eDosage\u003c\/div\u003e\n\u003cdiv class=\"sv\"\u003e41.07 g\/L\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"si\"\u003e\n\u003cdiv class=\"sl\"\u003eStorage\u003c\/div\u003e\n\u003cdiv class=\"sv\"\u003e15–30°C\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"si\"\u003e\n\u003cdiv class=\"sl\"\u003eIncubation\u003c\/div\u003e\n\u003cdiv class=\"sv\"\u003e37°C Anaerobic\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"tabs\"\u003e\n  \u003clabel class=\"tl\" for=\"tab-pd\"\u003eProduct Overview\u003c\/label\u003e\n  \u003clabel class=\"tl\" for=\"tab-prep\"\u003ePreparation \u0026amp; Usage\u003c\/label\u003e\n  \u003clabel class=\"tl\" for=\"tab-tech\"\u003eTechnical Data\u003c\/label\u003e\n  \u003clabel class=\"tl\" for=\"tab-docs\"\u003eDocumentation\u003c\/label\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pls\"\u003e\n  \u003cdiv class=\"pl\" id=\"panel-pd\"\u003e\n    \u003cdiv class=\"sh\"\u003eDescription\u003c\/div\u003e\n    \u003cp\u003eTryptone Sulfite Neomycin (TSN) Agar is a specialized selective and differential medium engineered for the primary isolation and enumeration of \u003cem\u003eClostridium perfringens\u003c\/em\u003e. This refined formulation incorporates dual-antibiotic selectivity and an integrated iron indicator system, making it a critical tool for food safety, dairy microbiology, and water quality laboratories.\u003c\/p\u003e\n    \n    \u003cdiv class=\"sh\"\u003eTarget Mechanism\u003c\/div\u003e\n    \u003cdiv class=\"cards\"\u003e\n      \u003cdiv class=\"card\"\u003e\n        \u003cdiv class=\"card-t\"\u003eH₂S Differentiation\u003c\/div\u003e\n        \u003cdiv class=\"card-b\"\u003eSodium Sulfite and Ammonium Ferric Citrate react to form black precipitates around sulfite-reducing colonies, allowing for visual confirmation of \u003cem\u003eClostridia\u003c\/em\u003e.\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"card\"\u003e\n        \u003cdiv class=\"card-t\"\u003eDual Selectivity\u003c\/div\u003e\n        \u003cdiv class=\"card-b\"\u003eA precise blend of Neomycin and Polymyxin B suppresses a wide spectrum of competing Gram-positive and Gram-negative flora.\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"card\"\u003e\n        \u003cdiv class=\"card-t\"\u003eNutrient Base\u003c\/div\u003e\n        \u003cdiv class=\"card-b\"\u003eTryptone and Yeast Extract provide high concentrations of essential amino acids and B-complex vitamins to support rapid anaerobic development.\u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"sh\"\u003eApplications\u003c\/div\u003e\n    \u003cp\u003e● Monitoring of \u003cem\u003eClostridium perfringens\u003c\/em\u003e in food, dairy, and environmental matrices.\u003cbr\u003e\n       ● Detection of sulfite-reducing anaerobes in water treatment microbiology.\u003cbr\u003e\n       ● Regulatory microbiological safety assessments in industrial quality control.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"pl\" id=\"panel-prep\"\u003e\n    \u003cdiv class=\"sh\"\u003ePreparation Procedure\u003c\/div\u003e\n    \u003ctable class=\"kv\"\u003e\n      \u003ctr\u003e\n\u003ctd\u003eReconstitution\u003c\/td\u003e\n\u003ctd\u003eSuspend 41.07 g of medium in 1 L of purified water.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eDissolution\u003c\/td\u003e\n\u003ctd\u003eHeat with gentle agitation until completely dissolved.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSterilization\u003c\/td\u003e\n\u003ctd\u003eAutoclave at 121°C for 15 minutes.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003ePouring\u003c\/td\u003e\n\u003ctd\u003eCool to 45–50°C before dispensing into sterile Petri dishes.\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\n\n    \u003cdiv class=\"sh\"\u003eIncubation \u0026amp; Interpretation\u003c\/div\u003e\n    \u003cp\u003eOptimal results require \u003cstrong\u003eanaerobic incubation\u003c\/strong\u003e at 37°C for 18–24 hours. Some strains may require up to 48 hours for complete H₂S reaction.\u003c\/p\u003e\n    \u003cdiv class=\"dt-wrapper\"\u003e\n      \u003ctable class=\"dt\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eOrganism\u003c\/th\u003e\n\u003cth\u003eGrowth\u003c\/th\u003e\n\u003cth\u003eColony Appearance\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003e\u003cem\u003eC. perfringens\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eBlack colonies (H₂S Positive)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003e\u003cem\u003eClostridium spp.\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd\u003eVariable\u003c\/td\u003e\n\u003ctd\u003eBlack or grey colonies\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003e\u003cem\u003eE. coli \/ Enterobacter\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd\u003eInhibited\u003c\/td\u003e\n\u003ctd\u003eNo growth (Selective Inhibition)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"pl\" id=\"panel-tech\"\u003e\n    \u003cdiv class=\"sh\"\u003eStandardized Formula (per Liter)\u003c\/div\u003e\n    \u003ctable class=\"kv\"\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTryptone\u003c\/td\u003e\n\u003ctd\u003e15.0 g\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYeast Extract\u003c\/td\u003e\n\u003ctd\u003e10.0 g\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSodium Sulfite\u003c\/td\u003e\n\u003ctd\u003e1.0 g\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAmmonium Ferric Citrate\u003c\/td\u003e\n\u003ctd\u003e0.5 g\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eNeomycin Sulfate\u003c\/td\u003e\n\u003ctd\u003e0.05 g\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003ePolymyxin B Sulfate\u003c\/td\u003e\n\u003ctd\u003e0.02 g\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAgar\u003c\/td\u003e\n\u003ctd\u003e15.0 g\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\n    \u003cdiv class=\"sh\"\u003ePhysicochemical Properties\u003c\/div\u003e\n    \u003cp\u003e● \u003cstrong\u003eFinal pH:\u003c\/strong\u003e 7.2 ± 0.2 at 25°C\u003cbr\u003e\n       ● \u003cstrong\u003eAppearance:\u003c\/strong\u003e Dehydrated powder is free-flowing and homogeneous.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"pl\" id=\"panel-docs\"\u003e\n    \u003cp\u003eTransparency and compliance documentation for AS-1404 is available upon request.\u003c\/p\u003e\n    \u003cdiv class=\"cards\"\u003e\n      \u003cdiv class=\"card\"\u003e\n\u003cdiv class=\"card-t\"\u003eTDS\u003c\/div\u003e\n\u003cdiv class=\"card-b\"\u003eTechnical Data Sheet with complete performance specifications.\u003c\/div\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"card\"\u003e\n\u003cdiv class=\"card-t\"\u003eSDS\u003c\/div\u003e\n\u003cdiv class=\"card-b\"\u003eSafety Data Sheet according to GHS standards.\u003c\/div\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"card\"\u003e\n\u003cdiv class=\"card-t\"\u003eCOA\u003c\/div\u003e\n\u003cdiv class=\"card-b\"\u003eBatch-specific Certificate of Analysis.\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"disc\"\u003e\n  \u003cstrong\u003eAuSaMicS Laboratory Division\u003c\/strong\u003e media are intended for professional laboratory use only. Not for human or animal consumption. Prepared plates should be stored at 2–8°C, protected from light, and used within the specified shelf-life.\n\u003c\/div\u003e\n\n\u003cdiv class=\"foot\"\u003eAusamics · Diagnostic Microbiology Media · Cat No: AS-1404\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Ausamics Life Science","offers":[{"title":"100 g","offer_id":48368281288959,"sku":"AS-1404-100G","price":95.0,"currency_code":"AUD","in_stock":true},{"title":"500 g","offer_id":48368281321727,"sku":"AS-1404-500G","price":245.0,"currency_code":"AUD","in_stock":true},{"title":"2.5 kg","offer_id":48368281354495,"sku":"AS-1404-2.5KG","price":1075.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/1087\/0271\/files\/TSNAgar_TryptoneSulfiteNeomycinAgar_AS-1404.jpg?v=1775357452","url":"https:\/\/ausamics.com.au\/products\/tryptone-sulfite-neomycin-agar-tsn-agar","provider":"AuSaMicS","version":"1.0","type":"link"}