EPA Method 624 Analytes

d2 C28 Triaromatic Sterane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-5, Cas.no. 205529-81-3

Betulin, 600µg/mL, Solvent-diisopropyl ether, Unit 1mL, # of units-10, Cas.no. 473-98-3

2,3',4,4',5,5'-Hexachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane