With KURARAY POVAL™ F we offer Polyvinyl Alcohol which we class as wide specification material. This means the product is in maximum of 1-2 parameters wider than our standard specification and we provide all analytical data so that you can review the specific lots. Some lots contain color chips, that have an impact to solubility. In any case a minimum inner temperature of 95° C has to be reached. The product is not contaminated and is pure Polyvinyl alcohol resin.