O,O-Dimethylhydrogenphosphate

Caffeine, 100 µg/ml, Methanol, 1ml

1,2,3,4-Tetrahydrobenzo[b]naphtho[1,2-d]thiophene, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 90501-14-7

EPA Method 551 - Disinfection By-Products