ISO Type 4
Prima-Rock has the highest compressive strength of any Whip Mix die material. Vacuum spatulation provides a smooth mix which flows readily. It’s compatible with all types of impression materials and upon setting, Prima-Rock develops a dense surface with superior hardness.
Water/Powder Ratio20 mL/100 g
Working Time6-8 minutes
Setting Time12 minutes
Setting Expansion.13%
Compressive Strength, Wet (1hr.)8,000 psi (55 MPa)
Compressive Strength, Dry (48 hrs.)17,000 psi (117 MPa)
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