EPA Method 515.1 Underivatized Back Catalog number: 30040 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2538.14-K-ME Naproxen Price on request 9126.4-K-IO Mono-n-butyltin-d9 trichloride, 1000µg/mL in Isooctane, 1ml Price on request 9414.18-5MG Mianserin-d3 hydrochloride (methyl-d3), neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 1219804-97-3 Price on request