Kneadable preliminary impression material for use in the classic double impression technique. Thanks to its firm mixing consistency, the material shows an especially high stability during the impression process. High elasticity and recovery on removal and contour accuracy during the model making process are ensured. Due to its final hardness of 72 shore A, Bisico® S1 is ideal for making preliminary impressions according to the double impression technique. Recommended correction silicones: Bisico® S4 or Bisico® S4 suhy Technical data Consistency: kneadable/putty Colour(A/B): white/ochre-yellow Linear shrinkage: < 0.1 % Mixing time: 30 sec. Working time (incl. mixing time): approx. 2:00 min. Setting time in the mouth: < 3 min. Final hardness: approx. 72 Shore A Standard: ISO 4823, Type 0, very high consistency