EPA Method 1664 - Oil & Grease (Sonicate)

Metoprolol, 1000µg/ml in MeOH, 1ml

2-Isopropylthioxanthone, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 5495-84-1

3-Nitroamino-1-propanol, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no.