CWA Iron Back Catalog number: 55311 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50127 pH 12.0 Standard @ 25°C Price on request DFP-SS-A10 Mass-Labelled PCDD & PCB Sampling Spike Solution, 1.2ml, nonane Price on request 73935 4-Acetamidoantipyrine, 1000µg/ml in MeOH, 1ml Price on request