EPA Method 418.1 - TPH IR Standard Back Catalog number: 98245 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 57181 Thallium (Tl) Price on request 73601 Tetracycline Price on request 9910.5-25MG 1-Penten-3-ol, neat, Solvent-neat, Unit 25mg, # of units-1, Cas.no. 616-25-1 Price on request