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品红亚硫酸钠琼脂平板

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  • 13.89/

芜湖欧克生物技术有限公司
15738036128 00000000
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  • Brand  芜湖欧克生物
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  • Main Business:生物成品培养基,物表环境采样管等
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Last Updated 2025-08-12 20:08

品红亚硫酸钠琼脂平板

品红亚硫酸钠琼脂

【预期用途】用于饮用水,水源水中总大肠菌群的选择性分离和确证

【规格】90mm×10皿/包

【pH(20 ℃~25 ℃)】7.3±0.1

【检验原理】乳糖发酵的细菌产生乙醛,在存在碱性品红的情况下乙醛与亚硫酸钠结合形成红色菌落,快速发酵乳糖的细菌产生金属光泽,不发酵乳糖的细菌形成无色透明的菌落。蛋白胨、酵母粉、牛肉粉提供碳氮源、维生素和矿物质;乳糖为可发酵的糖类;琼脂是培养基的凝固剂;磷酸氢二钾为缓冲剂;亚硫酸钠能将碱性品红还原,使其褪色,发酵乳糖的细菌产生乙醛,与亚硫酸钠和碱性品红生成红色菌落。

【主要组成成分】蛋白胨、牛肉粉、酵母粉、磷酸氢二钾、乳糖、琼脂、碱性品红、亚硫酸钠。

【储存条件及有效期】2 ℃~25 ℃避光保存,切勿冻藏。在储存条件下,自生产之日起有效期6个月。

Company Name 芜湖欧克生物技术有限公司
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Business Scope 生物成品培养基,物表环境采样管等
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