改良Letheen琼脂基础(颗粒)/用于测定季铵化合物的细菌活性
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TGY琼脂/用于细菌的培养
HB8837 | 见证书
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Letheen琼脂/用于化妆品中微生物检测
HB8603 | 见证书
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PLET琼脂基础/用于炭疽杆菌的分离鉴别
HB6258 | 见证书
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多粘菌素B(E)
P-36E | 详见说明
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HLEC专用培养基
BNCC376141 | 见详情
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EG培养基
BNCC390931 | 见详情
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L4RE
BNCC149625 | 见详情
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MH液体试管
BNCC391763 | 见详情
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中国蓝培养基即用型平板
BNCC391618 | 见详情
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肉汤培养基G(麦康凯肉汤)
BNCC391158 | 见详情
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EG肉汤培养基
BNCC390941 | 见详情
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蛋白瘤胃球菌培养基基础(含纤维二糖)
BNCC389132 | 见详情



Modified Letheen Agar Base is used for the determination of bacterial activity of quaternary ammonium compounds.
Approximate Formula:
Directions:
Suspend 52.1g of the medium and 7 ml of Tween-80 in one liter of distilled water or deionized water. Mix well. Heat and boil for 1 minute with frequent agitation to completely dissolve the powder. Sterilize in an autoclave at 121℃(15 lbs.) for 15 minutes. Pour into petri dishes.
Principle and Interpretation:
Peptone, meat extract and yeast extract provide nitrogen source for the growth of microorganisms, vitamin and growth factor. Sodium chloride provides a suitable osmotic environment. Glucose is a fermentable sugar. Lecithin can neutralize quaternary ammonium salt, Tween-80 can neutralize phenol, hexachlorophenol, formalin, the combination of which can neutralize ethanol. Sodium bisulfite partially neutralize the preservative systems commonly found in cosmetics. Agar is the solidifying agent of the medium.
Appearance:
Dehydrated medium is a free-flowing yellowish granule. The prepared medium is a kind of yellowish transparent gel.
Precautions:
This medium is for laboratory use only. Dried medium which is past shelf life, caking or color variation cannot be used.
Storage conditions and Shelf life:
Modified Letheen Agar Base must be stored tightly capped in the original container at 5-30°C. The dehydrated medium has a shelf life of 3 years from date of manufacturing. Prepared medium may be stored, out of direct light at 2-8°C.
Quality control:
Prepare the culture medium as per label directions. Inoculate and incubate at 36±1℃ for 24 hours.
以上信息仅供参考,请以实物批次为准!
本公司销售的所有产品仅供实验科研使用,不用于人体及临床诊断。
2. 阴性对照:无菌PBS溶液
3. 中和剂验证:需证明中和剂可完全中和消毒剂且不影响细菌复苏
2. 作用时间:根据产品说明设定(通常5-30分钟)
3. 培养条件:37℃培养48小时,需氧环境
4. 结果判定:试验重复3次,每次样本数≥5个
2. 温度敏感性:季铵盐类消毒剂活性受水温影响显著,需在20±1℃恒温水浴操作
3. 中和剂毒性测试:需单独验证中和剂对试验菌株无抑制作用
以上信息仅供参考,请以相应标准的原文为准!