Bromocresol purple 25 g

Transition range pH 5.2 - 6.8,yellow to purple,App. of sol. conforms,Sensitivity Passes test

Loss on dry. (110 °C) < 1%,Abs. max. 2max (pH 5.2) 427 - 431nm,Abs. max. pH 6.8 588 - 590nm,Abs. pH5.2 on dried 400 - 450nm,Abs. pH6.8 on dried 1000 - 1100nm