An off-white, versatile Type II, general purpose plaster. It's a formulated hemihydrate plaster (CaSO4.½H2O) produced from naturally occurring gypsum mineral. Can be used in dentistry during the flasking operation in the production of dentures. Can be mixed with dental stone plasters (Dentstone KD) for the production of model bases and also models for bleaching trays and working models for dentures. Plaster to water mix ratio (by weight) 100/60. Initial setting time: 9 minutes. Final setting time: 12 minutes. Linear expansion 0.28%. Brinell hardness: 40MPa. Wet compressive strength 10Mpa.