Fluorescence: Fluorescence is definitely the property of a mineral to emit noticeable mild when exposed to ultraviolet radiation. Gypsum does not fluoresce under UV gentle. Soil water opportunity monitoring: a gypsum block is usually inserted to the soil, and its electrical resistance can be calculated to derive soil dampness.[forty six] https://www.propanraya.com/id/produk/eco-gypsum-ee-4050