Internal Standard Back Catalog number: 95665 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 54119 pH 6.0 Standard @ 25°C Price on request DFP-LCS-B Mass-Labelled PCDDs/PCDFs/PCBs Solution/Mixture, 1.2ml, nonane Price on request 675521 Bisphenol C, 100mg Price on request