Prima-Rock High Strength Die Stone - Whip-Mix Corporation
Prima-Rock has the highest compressive strength of any Whip Mix die material. Vacuum spatulation provides a smooth mix that flows readily. It’s compatible with all types of impression materials and upon setting, Prima-Rock develops a dense surface with superior hardness.
- Working time: 6-8 minutes
- ISO Type 4
- Expansion: 0.13%
- 17,000 psi
- Water to powder ratio: 20:100