EPA Method 200.8 Internal Standard Back Catalog number: 56332 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended C580002-1MG Clindamycin-d3 Hydrochloride, 1mg Price on request 674936 D6-Metoxuron, 10mg Price on request 98552 Formaldehyde (0.1 ppm) Price on request