WS Disinfection By-Products - Cal Check Back Catalog number: 91837 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676413 D4-4-n-Nonylphenol, 100 µg/ml, Acetone, 1ml Price on request 677542 cis-1,2,3,6-Tetrahydrophthalimide, 100 µg/ml, Ace Price on request 55092 CWA Platinum Price on request