Hardening With Glyoxal: One Shot?

[Michael Koch-Schulte <mkochsch@shaw.ca>]

I'm mixing small batches (100 ml) of 3 per cent Knox with 2.5 mls of Glyoxal
(oh, and a splash of rye whiskey for bubbles) for sizing paper with a sponge
brush. Can I reuse this mixture by simply reheating in the microwave after
it cools and gels overnight? Is there a shelf life? Thx.

~m

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