Mass-Labelled PCB Extraction Standards, 1.2ml, nonane

1,2,4,6-Tetrachlorodibenzofuran, 1.2ml x 50ug/ml, nonane

Glucose, Cellobiose & Dextran Ratio Level 3

C27 Ring-C Monoaromatic sterane (5ß(H),10ß(CH3)/5?(H),10ß(CH3)),10 µg/mL,isooctane,1mL,