couldn't find anything on the web about this nor any other threads here but trying to get injection chamber to accept the input but its not happening. any suggestions?

By the look of your pipes there's already a gas in it, hydrogen chloride is light blue (as seen in the C.Infuser). Please break all the pipes & try again.

Your first screenshot shows the item tab, not the gas tab. Please check that the Chemical injection chamber is set to input gas from the top.

okay will do when i get back to my system in a few days, currently not available. honestly didn't see the tab :(

Gas tab

Hello, i had the same problem, injection chamber did not accepted hydrogen chloride from any side, but only from pipes, when i put a gas tank next to it, and set it to output on the side facing the injection chanber, it started working... maybe some problems with the pipes ? hope this helps