EPA Method 525.2 Standard Back Catalog number: 92693 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59263 Iodide Price on request 9399.19-100-ME Doxepin-d3 hydrochloride, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 347840-07-7 Price on request 13400-4424D-100AN Benzophenone-d10, 100μg/ml in Acetonitrile, 5ml Price on request