WS Sulphate / TOC Back Catalog number: 54148 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 79273 Promecarb Price on request 2192.8-50-ME Perfluoro-4-ethylcyclohexane sulfonic acid, potassium salt, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 335-24-0 Price on request 3108.12-50-HX 2,2',4,4',5,5'-Hexabromobiphenyl, 50µg/mL, Solvent-hexane, Unit 1mL, # of units-1, Cas.no. 59080-40-9 Price on request