EPA Method 8260B - Purgeable Internal Std Back Catalog number: 22013 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50381 Magnesium (Mg) Price on request 8482.22-K-ME Diltiazem (free base), 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 42399-41-7 Price on request 685734 Fensulfothion-oxon-sulfone, 100µg/ml in AL, 1ml Price on request