You have to measure the pH value of the solution once it is prepared. Being colored solutions it will be difficult to use a pH paper. Ideally you should use a pH-meter with a glass electrode.
  René J.

"FU,DONGTAO"  wrote:
  Hi, all

we will do some special staining of T blue and aldehyde fuscin. 
We will make some solutions by ourself. I notice some buffers need 
to measure PH value. But they are dyes, so you can not use dip 
paper. How do you measure them?

Thank you,

Ann


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