EPA Method 602/8020 Back Catalog number: 19197 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended CFN99646 Catechin, >98%, 20mg Price on request 677148 Diphenyltin dichloride, 1000 µg/ml, Methanol, 5m Price on request 3097.12-50-IO 2,2',5-Tribromobiphenyl, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 59080-34-1 Price on request