EPA Method 8032 Internal Standard Back Catalog number: 80303 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1579.4-250MG Metformin hydrochloride, neat, Solvent-neat, Unit 250mg, # of units-1, Cas.no. 1115-70-4 Price on request 0327.22-100-TX5 Indeno[1,2,3,-cd]fluoranthene-d12, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-5, Cas.no. 210487-06-2 Price on request 83510 EPA Method 8315 Calibration Mix #2 Price on request