13C3-Caffeine, 100 µg/ml, Methanol, 1ml

10:2MonoPAPS, 50µg/mL, Solvent-acetonotrile, Unit 1mL, # of units-1, Cas.no. 57678-05-4

[13C3]-Melamine, 1.2ml x 100ug/ml, water

2’,3,5-Trichlorobiphenyl