Clopyralid, 10.0 µg/ml, Acetonitrile, 10ml

d4 Pregnane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 205529-77-7

Caffeine, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 58-08-2

Acetochlor-d11 (2-ethyl-6-methylphenyl-d11), 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 1189897-44-6