CEL-GDT-12 gas distributor is used for multi-position reaction instruments such as multi-position photolysis instrument, parallel photochemical reaction instrument, LED photo-chemical reaction instrument, etc., to realize the functions of vacuuming, inflating, bubbling and independent control of reaction tube ；Achieved 1 air intake, 12 outlets, controlled by Anlok stainless steel valve imported, 1 / 16inchPEEK pipeline for branch line, which can be inserted into the reaction liquid, and PEEK material for 8mm--1 / 16inch joint.