Buffstone Type III Gypsum - Whip-Mix Corporation
Buffstone is a Type 3 gypsum for all general purpose lab uses.
- Features a long working time: 6-8 minutes
- Water to powder ratio: 30 ml/100 g
- Setting time: 15 minutes
- Setting expansion: 0.15%
- Compressive strength: 4,000 psi after one hour and 8,000 psi dry