EPA Method 602 - Surrogate Standard Back Catalog number: 19097 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50127 pH 12.0 Standard @ 25°C Price on request 3519.6-100MG 1,2,4-Trichlorobenzene, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 120-82-1 Price on request 50110B TOC Calibration Standard Price on request