WS Disinfection By-Products - Cal Check 4

2,6-Di-tert-butyl-4-methylphenol (2,6-Bis(1,1-dimethylethyl)-4-methylphenol), neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 128-37-0

ISO 18857-1 4-n-Nonylphenol (ring13C6), Internal standard 1 ng/µL, in acetone, 5mL

Sulfacetamide, 250mg