| WAT039550: Sep-Pak DNPH-Silica Plus Long Cartridge, 800 mg Sorbent per Cartri...
Sep-Pak DNPH-Silica Plus Long Cartridge, 800 mg Sorbent per Cartridge, 55-105 µm Particle Size, 20/pk Application Specific, 2 - 8 pH, Silica, 125Å Pore Size, Not Water Wettable, Mass Spec Compatible |