What is the crystalline silica content of Gypsum plasters?

The natural Gypsum that makes up our Thistle plaster range varies slightly in composition from site to site due to natural impurities in the surrounding rock, one of these impurities is quartz, a form of crystalline silica.

Based upon analysis of our gypsum plaster range, the respirable crystalline silica content of our products falls below the level that requires additional controls or product hazard classification.