Iowa BTEX Back Catalog number: 51181 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 678148 Sulprofos, 100 µg/ml, Acetonitrile, 5ml Price on request 674065 Coumaphos-oxon, 10.0 µg/ml, Cyclohexane, 1ml Price on request 8356.12-100-IO 2,3,3',5,6-Pentachlorobiphenyl, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 74472-36-9 Price on request