Medical grade 18 gypsum powder for traumatology and dentistry

WORK ORDER

• The product is mixed with water in a clean container on the principle of gypsum in water.
• The amount of water is determined according to the information on the package, based on the amount of gypsum to be shut.
• Further, the material is mixed until smooth.
• Neutrality, pH - 6: 7

SPECIFICATION

• Water consumption for paste of standard consistency - not more than 39% of weight of the binder
• Setting time of standard consistency at start (loss of solution mobility) - no earlier than 4.5 minutes
• Setting time at finish (complete solution hardening) - not later than 20 minutes
• Beating rate - the maximum residue on a sieve with a mesh size of 0.2 mm in clear - not more than 1%
• Breaking strength of sample bars aged of 2 hours under bending - not less than 6.2 MPa
• Breaking strength under compression - not less than 18 MPa
• Content of metal impurities in the binder - not more than 10 mg/kg