This standard specifies a method for measuring soil pH using potentiometric method using water or 1 mol/LKCl solution or 0.01 mol/LCaCl solution as the leaching agent. This standard is applicable to the pH measurement of all types of soil.
NY/T 1377-2007 Referenced Document
GB/T 6682 Water for analytical laboratory use.Specification and test methods*, 2008-05-15 Update