Caffeine,100 µg/mL,MeOH,1mL,

2,4'-DDD, 100 µg/ml, Methanol, 1ml

Y T Standard

Ethyl heptadecanoate, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 14010-23-2