{"product_id":"antibiotic-medium-no-8","title":"Antibiotic Medium No. 8","description":"\u003ch3 data-start=\"517\" data-end=\"569\"\u003eAntibiotic Medium No. 8 (Streptomycin Seed Agar)\u003c\/h3\u003e\n\u003cp data-start=\"571\" data-end=\"656\"\u003eOfficial Seed Agar for Cylinder-Plate Antibiotic Assays\u003cbr data-start=\"626\" data-end=\"629\"\u003eCatalog Number: \u003cstrong data-start=\"645\" data-end=\"656\"\u003eAS-1119\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"658\" data-end=\"661\"\u003e\n\u003ch4 data-start=\"663\" data-end=\"676\"\u003eOverview\u003c\/h4\u003e\n\u003cp data-start=\"678\" data-end=\"1016\"\u003eAntibiotic Medium No. 8 is the official standardized \u003cstrong data-start=\"731\" data-end=\"744\"\u003eseed agar\u003c\/strong\u003e used as an alternative to Antibiotic Medium No. 4 for the microbiological cylinder-plate assay of \u003cstrong data-start=\"843\" data-end=\"883\"\u003estreptomycin and dihydrostreptomycin\u003c\/strong\u003e. It is designated as \u003cstrong data-start=\"905\" data-end=\"919\"\u003e“Medium G”\u003c\/strong\u003e in USP \u0026lt;81\u0026gt;, European Pharmacopoeia 2.7.2, Japanese Pharmacopoeia (JP 17), and WHO guidelines.\u003c\/p\u003e\n\u003cp data-start=\"1018\" data-end=\"1352\"\u003eThe higher pH (\u003cstrong data-start=\"1033\" data-end=\"1044\"\u003e8.0–8.2\u003c\/strong\u003e) and modified nutrient balance produce \u003cstrong data-start=\"1084\" data-end=\"1143\"\u003elarger, sharper, and more reproducible inhibition zones\u003c\/strong\u003e with \u003cem data-start=\"1149\" data-end=\"1168\"\u003eBacillus subtilis\u003c\/em\u003e ATCC 6633 compared to Medium No. 4 in many laboratories. As a result, Antibiotic Medium No. 8 is the \u003cstrong data-start=\"1270\" data-end=\"1295\"\u003epreferred seed medium\u003c\/strong\u003e for streptomycin assays in current compendial protocols.\u003c\/p\u003e\n\u003chr data-start=\"1354\" data-end=\"1357\"\u003e\n\u003ch4 data-start=\"1359\" data-end=\"1376\"\u003eApplications\u003c\/h4\u003e\n\u003cul data-start=\"1378\" data-end=\"1674\"\u003e\n\u003cli data-start=\"1378\" data-end=\"1459\"\u003e\n\u003cp data-start=\"1380\" data-end=\"1459\"\u003eCompendial seed layer for streptomycin and dihydrostreptomycin potency assays\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1460\" data-end=\"1546\"\u003e\n\u003cp data-start=\"1462\" data-end=\"1546\"\u003eCylinder-plate diffusion assays of streptomycin-containing pharmaceutical products\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1547\" data-end=\"1674\"\u003e\n\u003cp data-start=\"1549\" data-end=\"1674\"\u003eRegulatory pharmaceutical quality-control testing\u003cbr data-start=\"1598\" data-end=\"1601\"\u003e\u003cem data-start=\"1603\" data-end=\"1672\"\u003e(currently the most commonly accepted seed medium for streptomycin)\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1676\" data-end=\"1679\"\u003e\n\u003ch4 data-start=\"1681\" data-end=\"1709\"\u003eKey Features \u0026amp; Benefits\u003c\/h4\u003e\n\u003cul data-start=\"1711\" data-end=\"2012\"\u003e\n\u003cli data-start=\"1711\" data-end=\"1792\"\u003e\n\u003cp data-start=\"1713\" data-end=\"1792\"\u003eHigher pH (\u003cstrong data-start=\"1724\" data-end=\"1731\"\u003e8.1\u003c\/strong\u003e) maximizes streptomycin diffusion and inhibition zone size\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1793\" data-end=\"1857\"\u003e\n\u003cp data-start=\"1795\" data-end=\"1857\"\u003eInternationally harmonised formulation (USP \/ EP \/ JP \/ WHO)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1858\" data-end=\"1939\"\u003e\n\u003cp data-start=\"1860\" data-end=\"1939\"\u003eProduces exceptionally large, clear inhibition zones with \u003cem data-start=\"1918\" data-end=\"1937\"\u003eBacillus subtilis\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1940\" data-end=\"2012\"\u003e\n\u003cp data-start=\"1942\" data-end=\"2012\"\u003eReference seed agar in current streptomycin pharmacopeial monographs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2014\" data-end=\"2017\"\u003e\n\u003ch4 data-start=\"2019\" data-end=\"2047\"\u003eComposition (per litre)\u003c\/h4\u003e\n\u003cul data-start=\"2049\" data-end=\"2176\"\u003e\n\u003cli data-start=\"2049\" data-end=\"2073\"\u003e\n\u003cp data-start=\"2051\" data-end=\"2073\"\u003eBeef Extract – 1.5 g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2074\" data-end=\"2099\"\u003e\n\u003cp data-start=\"2076\" data-end=\"2099\"\u003eYeast Extract – 6.0 g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2100\" data-end=\"2136\"\u003e\n\u003cp data-start=\"2102\" data-end=\"2136\"\u003ePeptone (meat or casein) – 6.0 g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2137\" data-end=\"2158\"\u003e\n\u003cp data-start=\"2139\" data-end=\"2158\"\u003eD-Glucose – 1.0 g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2159\" data-end=\"2176\"\u003e\n\u003cp data-start=\"2161\" data-end=\"2176\"\u003eAgar – 15.0 g\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2178\" data-end=\"2253\"\u003eFinal pH: \u003cstrong data-start=\"2188\" data-end=\"2210\"\u003e8.1 ± 0.1 at 25 °C\u003c\/strong\u003e (after sterilisation; strictly controlled)\u003c\/p\u003e\n\u003chr data-start=\"2255\" data-end=\"2258\"\u003e\n\u003ch4 data-start=\"2260\" data-end=\"2276\"\u003ePreparation\u003c\/h4\u003e\n\u003cul data-start=\"2278\" data-end=\"2721\"\u003e\n\u003cli data-start=\"2278\" data-end=\"2347\"\u003e\n\u003cp data-start=\"2280\" data-end=\"2347\"\u003eSuspend \u003cstrong data-start=\"2288\" data-end=\"2298\"\u003e29.5 g\u003c\/strong\u003e of dehydrated medium in \u003cstrong data-start=\"2323\" data-end=\"2330\"\u003e1 L\u003c\/strong\u003e purified water\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2348\" data-end=\"2436\"\u003e\n\u003cp data-start=\"2350\" data-end=\"2436\"\u003eHeat with frequent agitation and boil for \u003cstrong data-start=\"2392\" data-end=\"2407\"\u003e1–2 minutes\u003c\/strong\u003e until completely dissolved\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2437\" data-end=\"2494\"\u003e\n\u003cp data-start=\"2439\" data-end=\"2494\"\u003eSterilise by autoclaving at \u003cstrong data-start=\"2467\" data-end=\"2492\"\u003e121 °C for 15 minutes\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2495\" data-end=\"2519\"\u003e\n\u003cp data-start=\"2497\" data-end=\"2519\"\u003eCool to \u003cstrong data-start=\"2505\" data-end=\"2517\"\u003e48–50 °C\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2520\" data-end=\"2597\"\u003e\n\u003cp data-start=\"2522\" data-end=\"2597\"\u003eInoculate with a standardized suspension of \u003cem data-start=\"2566\" data-end=\"2585\"\u003eBacillus subtilis\u003c\/em\u003e ATCC 6633\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2598\" data-end=\"2721\"\u003e\n\u003cp data-start=\"2600\" data-end=\"2721\"\u003ePour \u003cstrong data-start=\"2605\" data-end=\"2615\"\u003e4–6 mL\u003c\/strong\u003e of seeded agar over a previously prepared base layer\u003cbr data-start=\"2668\" data-end=\"2671\"\u003e\u003cem data-start=\"2673\" data-end=\"2719\"\u003e(typically Antibiotic Medium No. 5 or No. 2)\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2723\" data-end=\"2726\"\u003e\n\u003ch4 data-start=\"2728\" data-end=\"2758\"\u003eTest Organism (Mandatory)\u003c\/h4\u003e\n\u003cul data-start=\"2760\" data-end=\"2793\"\u003e\n\u003cli data-start=\"2760\" data-end=\"2793\"\u003e\n\u003cp data-start=\"2762\" data-end=\"2793\"\u003e\u003cem data-start=\"2762\" data-end=\"2781\"\u003eBacillus subtilis\u003c\/em\u003e ATCC 6633\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2795\" data-end=\"2798\"\u003e\n\u003ch4 data-start=\"2800\" data-end=\"2824\"\u003eStorage \u0026amp; Stability\u003c\/h4\u003e\n\u003cul data-start=\"2826\" data-end=\"3012\"\u003e\n\u003cli data-start=\"2826\" data-end=\"2891\"\u003e\n\u003cp data-start=\"2828\" data-end=\"2891\"\u003e\u003cstrong data-start=\"2828\" data-end=\"2850\"\u003eDehydrated medium:\u003c\/strong\u003e Store below 30 °C in a cool, dry place\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2892\" data-end=\"2943\"\u003e\n\u003cp data-start=\"2894\" data-end=\"2943\"\u003e\u003cstrong data-start=\"2894\" data-end=\"2921\"\u003ePrepared seeded plates:\u003c\/strong\u003e Use within 24 hours\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2944\" data-end=\"3012\"\u003e\n\u003cp data-start=\"2946\" data-end=\"3012\"\u003eIf required, store seeded plates at \u003cstrong data-start=\"2982\" data-end=\"2992\"\u003e2–8 °C\u003c\/strong\u003e for short periods\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3014\" data-end=\"3017\"\u003e\n\u003ch4 data-start=\"3019\" data-end=\"3028\"\u003eNote\u003c\/h4\u003e\n\u003cp data-start=\"3030\" data-end=\"3336\"\u003eIn current editions of USP, European Pharmacopoeia, and JP, the combination of\u003cbr data-start=\"3108\" data-end=\"3111\"\u003e\u003cstrong data-start=\"3111\" data-end=\"3160\"\u003eAntibiotic Medium No. 8 + \u003cem data-start=\"3139\" data-end=\"3158\"\u003eBacillus subtilis\u003c\/em\u003e\u003c\/strong\u003e has replaced \u003cstrong data-start=\"3174\" data-end=\"3227\"\u003eAntibiotic Medium No. 4 + \u003cem data-start=\"3202\" data-end=\"3225\"\u003eKlebsiella pneumoniae\u003c\/em\u003e\u003c\/strong\u003e as the preferred system for streptomycin assays due to superior inhibition zone clarity and reproducibility.\u003c\/p\u003e\n\u003chr data-start=\"3338\" data-end=\"3341\"\u003e\n\u003ch4 data-start=\"3343\" data-end=\"3360\"\u003eIntended Use\u003c\/h4\u003e\n\u003cp data-start=\"3362\" data-end=\"3514\"\u003eFor pharmaceutical quality-control and official compendial streptomycin assay applications only.\u003cbr data-start=\"3458\" data-end=\"3461\"\u003eNot for clinical diagnostic, food, or veterinary use.\u003c\/p\u003e\n\u003chr data-start=\"3516\" data-end=\"3519\"\u003e\n\u003ch4 data-start=\"3521\" data-end=\"3546\"\u003eQuality \u0026amp; Compliance\u003c\/h4\u003e\n\u003cul data-start=\"3548\" data-end=\"3798\"\u003e\n\u003cli data-start=\"3548\" data-end=\"3609\"\u003e\n\u003cp data-start=\"3550\" data-end=\"3609\"\u003eOfficial seed agar for streptomycin cylinder-plate assays\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3610\" data-end=\"3677\"\u003e\n\u003cp data-start=\"3612\" data-end=\"3677\"\u003eComplies with USP \u0026lt;81\u0026gt;, EP 2.7.2, JP 17, and WHO requirements\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3678\" data-end=\"3753\"\u003e\n\u003cp data-start=\"3680\" data-end=\"3753\"\u003eManufactured under controlled conditions for batch-to-batch consistency\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3754\" data-end=\"3798\"\u003e\n\u003cp data-start=\"3756\" data-end=\"3798\"\u003eCOA, SDS, and TDS available upon request\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3800\" data-end=\"3803\"\u003e\n\u003ch4 data-start=\"3805\" data-end=\"3837\"\u003eCustoms \u0026amp; Trade Information\u003c\/h4\u003e\n\u003cp data-start=\"3839\" data-end=\"3944\"\u003eHS \/ AHECC Code: \u003cstrong data-start=\"3856\" data-end=\"3870\"\u003e3821.00.00\u003c\/strong\u003e\u003cbr data-start=\"3870\" data-end=\"3873\"\u003ePrepared culture media for development or maintenance of microorganisms\u003c\/p\u003e","brand":"Ausamics Life Science","offers":[{"title":"100G","offer_id":48052762640639,"sku":"AS-1119-DH-LS-100G","price":55.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0771\/1087\/0271\/files\/culturemedia_image_80e6f41a-48c6-4ead-86b4-33c8e2556c90.jpg?v=1771063029","url":"https:\/\/ausamics.com.au\/products\/antibiotic-medium-no-8","provider":"AuSaMicS","version":"1.0","type":"link"}