SDWA Corrosivity (Langlier Index) Back Catalog number: 55121 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1844.14-1G 4-n-Heptylbenzoic acid, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 38350-87-7 Price on request IPPFNS Sodium perfluoro-7-methyloctanesulfonate, 1.2ml x 50ug/ml, methanol Price on request 50814 Salinity Standard Price on request