Theophylline, 100µg/ml in MeOH, 5ml

Metazachlor, 10.0 µg/ml, Acetonitrile, 10ml

Caffeine-d3 (1-methyl-d3), 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 26351-03-1

2,4-Diaminotoluene, 100 µg/ml, Acetonitrile, 5ml