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Using over one year old resin of already opened cartridge?

Hello,
I want to use a resin that has been used over year ago. So the resin cartridge is already opened. But it was stored in a locker, away from light.

I would use a new tank for that. My question refers only to old resin in cartridges not in tanks.

Do you think it it still usable? What is your experience with old resin?

Hey @anhngu!

Do you mind if I ask which material it is?

It’s Dental Model resin.