EPA Method 524 & 624 - Internal Standard

5'-Fluoro-2,3,3',4,4',5-hexachlorobiphenyl, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no.

Glyphosate-1,2-13C2 15N, 100µg/ml in Water, 1ml

Metoprolol (free base),neat,neat,50mg,