Fluorescence: Fluorescence Is definitely the property of the mineral to emit noticeable mild when exposed to ultraviolet radiation. Gypsum would not fluoresce under UV gentle. Hair or fibre and lime or clay may very well be included to plasters throughout manufacture. The plaster coats, except for some finish coats, are https://www.propanraya.com/id/produk/eco-gypsum-ee-4050