EPA Method 508.1 & 525.2 Pesticide Standard Back Catalog number: 91970 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50125 pH 1.0 Standard @ 25°C Price on request 9759.24-10MG 2-Ethylhexyl n-octyl phthalate, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 3461-26-5 Price on request 10520.10-K-AN (±)-Nicotine-2,4,5,6-d4 (pyridine-d4),1000 µg/mL,acetonitrile,1mL, Price on request