EPA 1620 Standard 1 Back Catalog number: 52139 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8921.20-5MG Pimaric acid, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 127-27-5 Price on request 8388-K-W Triton X-100 (n=4-17), 1000µg/mL, Solvent-water, Unit 1mL, # of units-1, Cas.no. 9002-93-1 Price on request 0140.16-K-IO 3,3',5,5'-Tetramethylbiphenyl, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 25570-02-9 Price on request