BS ISO 10390:2005

Foreword
1 Scope
2 Normative references
3 Principle
4 Reagents
5 Apparatus
6 Laboratory sample
7 Procedure
8 Repeatability
9 Test report
Annex (informative) Results of an interlaboratory trial
                    for the determination of the pH in soils
Bibliography

Describes instrumental method for the routine determination of pH using a glass electrode in a 1:5 (volume fraction) suspension of soil in water (pH in H[2]O), in 1 mol/l potassium chloride solution (pH in KCl) or in 0,01 mol/l calcium chloride solution (pH in CaCl[2]).

This International Standard specifies an instrumental method for the routine determination of pH using a glass electrode in a 1:5 (volume fraction) suspension of soil in water (pH in H₂O), in 1mol/l potassium chloride solution (pH in KCl) or in 0,01mol/l calcium chloride solution (pH in CaCl₂).

This International Standard is applicable to all types of air-dried soil samples, for example pretreated in accordance with ISO11464.