EPA Method 524 & 624 - Internal Standard Back Catalog number: 19794 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended A15935000WL-100 Penicillin G potassium, 100µg/mL in Acetonitrile, 1ml Price on request 3695.44-20-05ME Okadaic acid, 17.7µM, Solvent-methanol, Unit 0.5mL, # of units-1, Cas.no. Price on request 92295 Ethylene glycol Price on request