Gypsum For Moulding and Casting Plaster

Gypsum for moulding and casting plaster Degree of whiteness 96 min water / plaster ratio 100- 250 % Initial setting time 12:18 minutes final setting time 18 - 28 % fluidity 160 - 250 % water absorption > 32 % bending strength > 70 Kg /Cm2 compressive strength > 240 Kg / cm2 fineness, retained on sieve 0.15 mm (100 mesh) zero Heliopolis extra is formulated plaster used in ceramics to produce working molds for the silp casting of tableware and sanitary ware