Fluchloralin, 100 µg/ml, Ethyl acetate, 1ml

ICP-AES ICV Water/ Soil Matrix, in 5% HNO3, 100ml

d4 C28 alpha alpha alpha (20R)/C29 alpha alpha alpha (20R)-Methyl/Ethylcholestane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no.

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