PRESIDENT the Original Putties are A-silicone based, kneadable, highly viscous tray materials. The remarkable recoverability of the putties’ results in highly precise impressions even in areas with strong undercuts. Mixing time: 30s, total working time: 1min10s + oral setting time: 3min. Mixing ratio for base and catalysator: 1:1. Package contains 1pc 300ml Soft base, 1pc 300ml catalyst and 2pc dosage spoons.