性能描述

grade    indicator grade 
composition    Dye content, >97% 
useful pH range    1.8 - 2.0, orange to yellow (acid) 
   7.0 - 8.8, yellow to violet (alkaline) 
pH range    7.2 - 8.8, yellow to red 
absorption    λmax 367 nm (2nd) 
   λmax 570 nm 
Application
Cresol Red is used as a tracking dye in DNA, RNA (agarose) and protein (polyacrylamide) electrophoresis. In agarose, Cresol Red runs with an apparent molecular size of approx. 125 bp DNA. Cresol Red does not inhibit Taq polymerase. Recently Cresol Red has been used as a pH sensitive indicator dye in nanoengineered optical urea biosensors films and hetero-core structured fiber optic pH sensor.

性   状： 红棕色结晶性粉末。溶于乙醇、水、稀酸(黄色)和稀碱(紫色)。其0.1％乙醇溶液或0.04％钠盐水溶液用作指示剂。
 
 
储   存： 密封保存。
 

用   途： 酸碱指示剂，pH 7.2(黄)～8.8(紫红)； pH 2.0(橙色)～3.0(琥珀色)。