NEN-ISO 7490
Dentistry - Dental Gypsum-bonded casting investments for gold alloys
inactive, Most Current
| Organization: | NEN |
| Publication Date: | 1 July 1992 |
| Status: | inactive |
| Page Count: | 4 |
| ICS Code (Dental materials): | 11.060.10 |
scope:
This Standard establishes a classification of, and specifies requirements for, gypsum-bonded casting investments together with the test methods to be used to determine compliance with these requirements. It applies to gypsum-bonded investments suitable for casting dental gold alloy which have liquidus temperatures not higher than 1080°C.
Document History
NEN-ISO 7490
July 1, 1992
Dentistry - Dental Gypsum-bonded casting investments for gold alloys
This Standard establishes a classification of, and specifies requirements for, gypsum-bonded casting investments together with the test methods to be used to determine compliance with these...