As some of you know, I am a HVAC/R service contractor. During my course of service, I occasionally use CPVC piping for condensate drains. What I have experienced is, that almost every time I open a can of CPVC cement, use it once, only to find when the next time I use it, it is either thickened or gelled up.
I have tried several procedures and techniques to keep the cement good but have come to the conclusion, once you open a can, it is a one time deal. I limit the "air exposure" to an absolute minimum and the results seems to be always the same.
Is there something that can be done to preserve this cement or is this the nature of the beast....??