WS Disinfection By-Products - Cal Check 4 Back Catalog number: 93986 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended NG-S596-1G Stearic acid diethanolamide, 1g Price on request 72223 Ciprofloxacin, 1000µg/mL in water, 1ml Price on request 79416 n-Propanol Price on request