PCB Isomers Mix A Back Catalog number: 94274 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 92131-1G Trimethoprim, >99%, 1g Price on request 675902 Propylene thiourea, 250mg Price on request BPAP 4,4'-(1-Phenylethylidene)bisphenol, 1.2ml x 50ug/ml, methanol Price on request