Якість ґрунту. Визначення рН

1 2 4 1 2 З? 4 5 6 7 8 9 —? —? —? —? —? —? —? —? —? —?

SOIL QUALITY

Determination of pH
1 2 ISO 1770:1981 Solid-stem general purpose thermometers
ISO 3696:1987 Water for analytical laboratory use — Specification and test methods.

ISO 1770:1981 ISO 3696:1987 З? —? —? —? 4 4.1 4.2

4.3 4.4 4.4.1 4.4.2 4.4.3 5 5.1 5.2 pH - 5.3 5.4 5.5 5.6 6 7 7.1 7.1.1 7.1.2 7.1.3

7.2 7.3 —? —? —? —? —? 8 9 а?) Ь?) с?) d) е?) f)

1 ISO 5725-2:1994 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
2 ISO 11464:1994 Soil quality — Pretreatment of samples for physico-chemical analyses.

1 ISO 5725-2:1994 2 ISO 11464:1994