产品描述:
Sulfonephthalein dye. Acid-base pH indicator dye with pH ranges of pH 1.2 (Red) - pH 2.8 (Yellow), and pH 8.0 (Yellow) - pH 9.6 (Blue). Spectral data: Absorption, lambdamax 424nm. Has been used as pH sensor, indicator, in cosmetics and drug applications, microbiological assays and determining lipases.