Prevent costly mistakes by color coding your extraction fluids
Ideal for semi-volatile extractions like EPA Methods 3500C, 625, and 8270
Simply add 1 mL of the methanol based indicator to your sample
Store in your lab refrigerator
Color coded surrogates are methanol based and supplied in 25mL volumes in screw-top vials — add 1 mL to your sample and help avoid performing re-extractions. These surrogates act as an indicator to ensure the pH range of the sample is correct.