Caffeine,100 µg/mL,MeOH,1mL,

Endosulfan-II-d4, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 203716-99-8

3,4,5-Trichloro[13C6]phenol, 1.2ml x 100ug/ml, isooctane

Mercury (Hg)