GB/T 6920-1986 《Water quality--Determination of pH value--Glass electrode method》 Related products

This standard specifies the operation method for determining the pH value of drinking water, surface water and industrial wastewater by using the Glass electrode method. The method is not disturbed by the color, turbidity, oxidation agent, etc. of the water, but errors may occur under strong acidic and alkaline conditions. The standard details the definition and measurement principle of the ph value, and emphasizes the influence of temperature on the measurement result, requiring the use of temperature compensation device for correction. In addition, the standard also provides the preparation method of the standard buffer solution and related reagent requirements to ensure the accuracy and conformity of the measurement result.