NA 021
DIN Standards Committee Iron and Steel
DIN EN ISO 439 [CURRENT] references following documents:
| Document number | Edition | Title |
|---|---|---|
| ISO 3696 | 1987-04 | Water for analytical laboratory use; Specification and test methods More |
| DIN ISO 3696 | 1991-06 | Water for analytical laboratory use; specification and test methods; identical with ISO 3696:1987 More |
| ISO 5725-2 | 2019-12 | Accuracy (trueness and precision) of measurement methods and results - Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method More |
