Fipronil-sulfone, 10.0 µg/ml, Acetonitrile, 10ml

Imidacloprid-d4 (imidazolidine-4,4,5,5-d4),100 µg/mL,acetonitrile,1mL,

Caffeine-d3 (1-methyl-d3), neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 26351-03-1

2,2',4,4',6,6'-Hexachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane