EPA Method 8141/1657 Surrogate Standard Back Catalog number: 92357 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674564 Triclosan-methyl, 100mg Price on request 12114.4-10MG Metformin-d6 hydrochloride (dimethyl-d6),neat,neat,10mg, Price on request 70905 1-Chloro-4-fluorobenzene Price on request