Hi there,

In the frame of this elctrochemical test module part or our own R&D of a gas system, including within sub parts of the system, a mix of gaseous fuel (hydrogen) and water based electrolyte with a high concentration of KOH (potassium hydroxyde), and even after a few years using rated materials, bonding agents, fittings etc, I still find hard to settle on what I'm going to use on a project when I have to join some materials to either make a temporary vessel or join a hose etc...

Here is the record sheet that was started, it contains various tests.

At this stage I would like to stop wondering if the PVC cement is actually failing with KOH or is it my assembly technique that has to be reconsidered. As per my understanding, PVC cement is supposed to weld the pipe surfaces together so there might be something I am not correctly understanding.

Here is the worksheet, have a look: https://docs.google.com/document/d/13e3xl6wozGqWuI...

Cheers.