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Product details
名称
福林酚试剂
分子类型
未知
英文名称
Folin & Ciocalteu's Phenol Reagent
货号
F743373-100ml
包装规格
100ml
浓度
2N
储存温度
2-8°C储存,避光
运输条件
冰袋运输
稳定性与储存
4℃避光保存,一年有效。室温保存,至少一个月内有效。
敏感性
对光线敏感
产品介绍
本试剂采用钨酸钠、钼酸钠、磷酸、浓盐酸按一定比例加热回流后加入硫酸锂精制而成,色泽金黄、透亮,是实验室测定溶液中蛋白质、多肽、多酚或酪氨酸等物质含量的常用试剂。本品酸度为2N,请根据实验需要直接使用或适当稀释。本试剂可测定蛋白浓度 0.05~1mg/mL,当蛋白浓度范围为0.05~0.5mg/mL 时,线性关系最好。如果待测样品蛋白浓度超过此范围,请适当稀释到合适浓度范围。本试剂具有腐蚀性,应避免接触皮肤、粘膜等;试剂颜色变为墨绿色时应弃用。本试剂为 2N 浓度,使用时可根据具体要求用蒸馏水或者去离子水进行稀释。该产品仅适用于科研领域,禁止用于临床诊断或其他用途。注意密封保存,避免挥发和腐蚀物品。 实验前准备工作: 1、配制 A1:称取 20g 无水碳酸钠、4g 氢氧化钠溶解于 1L 水中; 2、配制 A2:称取 0.2g 硫酸铜溶于 20mL 水中; 3、配制 A3:称取 0.4g 酒石酸钾钠溶于 20mL 水中;在测定的当天将A1:A2:A3 按100:1:1的体积比混合, 即为试剂 A,混合放置 30 分钟后使用。先将 A2 和 A3 混合,混合液再与A1 混合,次序颠倒可能有沉淀产生。试剂 A 只能当天使用,如产生沉淀或混浊需重新配制,三种溶液分开于室温下可长期保存。 4、先制作 2mg/ml 的蛋白母液,再参考“附表”稀释成各种浓度的蛋白标准品溶液。5、福林酚试剂 2N 稀释至 1N 使用。 操作步骤操作步骤(反应总体积 5.6ml): /
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Research chemical 100ml

Research chemical 100ml; supplied for laboratory research, analysis, inspection, and scientific procurement use; specifications: 100ml.

item number:F743373-100ml
Product model:100ml
level: 100ml
Lead Time:30days
sold 758 Items
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100ml

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