What is the part number for the end connector kit to use 3.0-, 3.9-, or 4.6-mm ID cartridge columns? - WKB31045 Last updated Save as PDF Share Share Tweet Share Article number: 31045 ENVIRONMENT HPLC Cartridge column end connector kit ANSWER WAT037525 - End Connector Kit ADDITIONAL INFORMATION Waters End Connector Kit Care & Use Manual Video: How to Assemble the Waters Cartridge Column End Connector Kit