33# buff quickstone

From Whip Mix website:

ISO Type 3

Quickstone is an economical dental stone with consistent handling properties. Its smooth creamy mix makes it ideal for a variety of lab procedures.

Physical Properties:

Water/Powder Ratio: 28 mL/100 g

Working Time: 3 – 5 minutes

Setting Time: 10 minutes

Setting Expansion: .14%

Compressive Strength, Wet (1 hour): 4,000 psi (27 MPa)

Compressive Strength, Dry (48 hrs.): 8,000 psi (55 MPa)