IPA Turned to Jelly

Had an interesting experience with one of our IPA tanks today. Our printer hasn’t been used in a few weeks and one of the tanks of IPA has turned to jelly. Here’s a video of what it looks like. I’m pretty sure it was totally fluid when I dropped the parts in. Looks to me like there was some kind of sudden reaction that changed the viscosity.

The IPA in the tanks is relatively new. Our last batch of IPA lasted a long time, and through many more prints than this one.

Has anyone experience anything like this, or have any idea what caused it?

Yup, once you have washed several items in the ipa, if you let strong sunlight onto it if turns into a gooey soup.

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