Potassium standard

Sodium dodecylbenzenesulfonate, mixture of branched C10-C14, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 25155-30-0

Tetrachloroguaiacol , 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 2539-17-5

Fenchlorphos-oxon, 100µg/ml in Acetonitrile, 1ml