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danyzj01

银虫 (正式写手)

[求助] 1%溴酚蓝是如何配制的,为什么在水里溶解不完全?

这样过滤器后浓度低了如何用于配制上样缓冲液?
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yjchsh

铁杆木虫 (正式写手)

Dr.

【答案】应助回帖

Of course, please look at the following information from sigma

Bromophenol Blue
B0126 Sigma-Aldrich

solubility

NaOH: soluble (The water-soluble sodium salt was prepared by grinding the powder in a mortar with equimolecular amounts of N/10-NaOH, i.e. about 6 ml. for each 400 mg powder.)  
   ethanol: soluble (A stock solution of BPB was prepared by dissolving 134 mg BPB in 20mL 96% ethanol and diluted to 100mL with water. 3)
4楼2012-04-19 01:24:25
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yjchsh

铁杆木虫 (正式写手)

Dr.

【答案】应助回帖

感谢参与,应助指数 +1
加几滴5M的NaOH很快就溶解了
在配置SDS样品处理液时用的是pH6.8的Tris-HCl缓冲液
所以没有影响
2楼2012-04-18 11:24:20
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danyzj01

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引用回帖:
2楼: Originally posted by yjchsh at 2012-04-18 11:24:20:
加几滴5M的NaOH很快就溶解了
在配置SDS样品处理液时用的是pH6.8的Tris-HCl缓冲液
所以没有影响

如果用乙醇溶解可行吗?用百分之多少的比较好?
3楼2012-04-18 20:32:13
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danyzj01

银虫 (正式写手)

引用回帖:
4楼: Originally posted by yjchsh at 2012-04-19 01:24:25:
Of course, please look at the following information from sigma

Bromophenol Blue
B0126 Sigma-Aldrich

solubility

NaOH: soluble (The water-soluble sodium salt was prepared by grinding the  ...

不过乙醇密度较低,到时候上蛋白样的时候会不会整个浮起来
5楼2012-04-19 20:21:34
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