Phthalic acid, bis-iso-butyl ester, certified, 0.25g Back Catalog number: C16173500 Availability: In the manufacturer's stock Price on request - + Recommended 59592 Chemical Oxygen Demand Price on request S7507-10G Sulfamethoxazole, anal. std., 10g Price on request 9388.12-100-IO 2,2',5,6'-Tetrachlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 41464-41-9 Price on request