Gas inlet adapter with 45/50 inner joint, is used for connection of the gas source to the lower reservoir. Inlet connection is 1/2” Swagelok® tubing for use with CG-1975-20 compression fitting. Adapter is available in 3 styles. Style "A": Adapter has a large 25mm x 70mm Extra Coarse Fritted section that will disperse the gas sub-surface into the scrubbing fluid. This adapter is the best for hard to scrub gases. Style "B":Adapter has an extension tube without the fritted section to insert the gas into the scrubbing fluid sub-surface. PLEASE NOTE: THIS STYLE ADAPTER IS SUPPLIED WITH THE COMPLETE SCRUBBER.Style "C": Adapter permits the gas to enter the flask above the sub-surface of the scrubbing fluid. When using this adapter, all of the gas to liquid interaction takes place in the column.