Sulfamethazine, 100μg/mL in Acetonitrile, 1ml

Demeton-S-methyl, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 919-86-8

1-Nitrofluoranthene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 13177-28-1

Multi-Element Internal Standard