What is the part number of the solvent select valve cartridge for an H-Class QSM? - WKB53997 Last updated Save as PDF Share Share Tweet Share Article number: 53997 ENVIRONMENT QSM ACQUITY UPLC H-Class ACQUITY UPLC H-Class Quaternary Solvent Manager (QSM) ACQUITY UPLC H-Class Bio ANSWER 700005408 for ACQUITY UPLC H-Class 700005423 for ACQUITY UPLC H-Class Bio ADDITIONAL INFORMATION Refer to Article 13911 for the solvent select valve assembly.