ISO 10390 2nd Edition, February 15, 2005
Soil quality - Determination of pH
Additional Comments: ENGLISH
Published By:International Organization for Standardization (ISO)
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 1 mol/l potassium chloride solution (pH in KCl) or in 0,01 mol/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 ISO 11464.