This is a retarded hemihydrate, pre-mixed gypsum plaster.
It's ideal for most medium to high suction backgrounds, including masonry such as bricks and aircrete blocks. With a final coat of Thistle MultiFinish, ThistlePro PureFinish, ThistlePro DuraFinish or ThistlePro Magnetic plaster it provides a smooth, inert, high quality surface to internal walls. It's suitable for applying by hand or using a plaster projection machine.
Stored correctly, this product has a shelf life of four months, and bags are marked with a use by date so you can use them in strict rotation.