EPA Method 548.1 Analyte

Salicylic acid-d4 (3,4,5,6-d4), neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 7864-17-0

Carbophenothion-methyl, 100 µg/ml, Methanol, 1ml

Metformin-d6-HCl, 100μg/ml in MeOH, 5ml