Elasticity & elastic recovery: highly elastic, permanent deformation less if the impression is removed from the mouth quickly.lower w/p ratio results in lower flexibility.Once its moistened rapid spatulation by swiping or stropping against the side of the bowl is done. The proper W/P ratio as pacified by the manufacturer should be used measured quantity of water and powder are added in the rubber bowl & mixing is started, with a stirring motion to wet the powder with water. The top of the can should be taken off carefully to prevent the silica particles from being inhaled. The Powder is taken after inverting the can several time to produce uniform distribution of the filler before mixing with water. Prolonged gelation time is tedious for both pt.
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