ISO 5439:1978
$12.35
Acid-grade fluorspar — Determination of available fluorine content — Potentiometric method after distillation
| Published By | Publication Date | Number of Pages |
| ISO | 1978-09 | 8 |
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 %.
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