Specifies a potentiometric method using a fluoride-ion sensitive electrode. After destillation of fluorine from the test portion in the presence of perchloric acid the distillate shall be titrated with lanthane nitrate solution. Applicable to products having a calcium fluoride content greater than 90 %.
Status: WithdrawnPublication date: 1978-09
Edition: 1Number of pages: 6
Technical Committee: ISO/TC 175 Fluorspar
- ICS :
- 73.080 Non-metalliferous minerals
ISO 5439:1978Stage: 95.99
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