Ammonium (NH4+)

Ethanol standard in water,0.8g/L,water, 1.5mL

Methamidophos, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 10265-92-6

EPA Method 539Mix #1, 100µg/ml in MeOH, 1ml