CA goes bad because of moisture. That is what causes CA to "kick off" and harden, and larger bottles of CA go bad because of the moisture in the air. If you want to store CA so that it doesn't go bad you need to store it so that air doesn't come in contact with it. If you have a large jar or other airtight container it will help your CA stay fresh longer. If you have any of those silica gel packets shipped in electronics or other packages drop them in as well as they remove moisture from the air. As for my CA, I vacuum store it. I have a Food Saver vacuum machine that we use to vacuum store food. I have one of the large plastic storage containers for that system that I set my CA bottles in and then vacuum seal it to keep any moisture out of it.

Ken</p>