BS EN ISO 9963-1:1996 - Water quality. Determination of alkalinity - Determination of total and composite alkalinity
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BS EN ISO 9963-1:1996 is a British Standard that specifies a method for the determination of alkalinity in water. Alkalinity is a measure of the water's capacity to neutralize acids and is an important parameter in water quality assessment.
This standard specifically covers the determination of both total alkalinity and composite alkalinity. Here's a brief overview of what these terms mean:
Total Alkalinity: Total alkalinity is a measure of the water's ability to neutralize strong acids completely. It includes all sources of alkalinity, including bicarbonate (HCO3-), carbonate (CO3^2-), and hydroxide (OH-) ions. Total alkalinity is expressed in units of milligrams per liter (mg/L) or milliequivalents per liter (meq/L) of calcium carbonate (CaCO3) or some equivalent substance.
Composite Alkalinity: Composite alkalinity refers to a measure of the water's ability to neutralize both strong and weak acids. It includes the alkalinity from bicarbonate, carbonate, and hydroxide ions (like total alkalinity) but also includes any additional alkalinity contributed by other substances present in the water. Composite alkalinity can be expressed in the same units as total alkalinity.
The standard BS EN ISO 9963-1:1996 provides detailed procedures for the determination of both total and composite alkalinity, ensuring accuracy and consistency in measuring this important water quality parameter. It outlines the necessary reagents, equipment, and steps to be followed to carry out the alkalinity determination.
