How solvent recycling works

General Discussion
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I go through a LOT of IPA with resin printing, so I have a Uniram Solvent recycling system. AFAIK this is the only real way to recycle IPA and get back IPA that has the same specific density as fresh IPA. Specific density is a measure of how “pure” your IPA is…I may make a video/experiment with some density measurements in the future!

There hasn’t really been a lot of content out there showing how these machines work, so I thought I would share our process with the world. Hope this is helpful to some.

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Thanks for continually sharing useful information like this. :+1:

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No problem! Glad you find it useful :slightly_smiling_face:

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Thank you for the useful information you have shared. I have a question, if you have information, I would be glad if you share it. I don’t know exactly how long it takes to change the IPA solvent. Is there any information on how to measure it or that it should change at a certain time, such as 2-3 weeks or 1-2 months. Or like a scale that shows that it needs to change.

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You can measure IPA resin concentration using a hydrometer. The Formlabs machines come with a basic one.

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