2,3-Butanediol, certified, 0.25g

Dibenz[a,h]anthracene-d14, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-10, Cas.no. 13250-98-1

Fensulfothion, 100 µg/ml, Acetonitrile, 5ml

Acetone, certified, 5ml