WS Anions - Cal Check (X 10) Back Catalog number: 59353 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-IS-D40 Mass-Labelled PCDD/PCDF Internal Standard Solution, 1.2ml, nonane Price on request 50034 Sodium Chloride (Cl-) Price on request 71681 Pentachlorofluoroethane Price on request