Fluorescence: Fluorescence could be the residence of the mineral to emit seen gentle when subjected to ultraviolet radiation. Gypsum isn't going to fluoresce below UV light-weight. A significant note just before introducing gypsum to the soil will be to generally know your soil status. Always do soil testing.  Safety Eyeglasses https://www.propanraya.com/id/produk/eco-gypsum-ee-4050