Sodium Sulfate (SO42-) Back Catalog number: 50037 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended EPA-23CS3 Calibration Verification Solution, 1ml, nonane Price on request 0347.18-K-T p-Terphenyl, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 92-94-4 Price on request 11194.26-K-IO Diisononyl phthalate (C9-alkyl ester isomer mix),1000 µg/mL,isooctane,1mL, Price on request