UREA
A dry powder additive for extending the open working time of hide glue (mixed from dry granules). Use 5% to 30% by weight. 8 OZ. PLASTIC JAR.
This product does not degrade the glue as you might read elsewhere. Urea is simply a humectant, meaning it makes the mixed glue retain moisture so it suppresses gelling. Typically 1-2% should be added based upon dry weight of the granules, not the mixed solution. 5% is maximum. #2035 – $25.00