IS 18877 : Part 3 : 2024 Lab Instruments for CBM Evaluation - Code of Practice - Part 3 Turbidity Meter

1 SCOPE

This standard covers the turbidity meter which is a very essential and useful instrument in oil field as well as in CBM operation for characterization and quality control of injection water, waste water, effluent water, chemicals etc for measurement of turbidity.

Turbidity is an optical property of the water and it indicates the haziness or opaqueness of water. The turbidity is caused by the suspended particle and coloured material in water. In CBM, turbidity of water is measured by nephelometry (90 degree scattering with respect to the centre line of the incident light path) and turbidity is measured in NTU unit (nephelometric turbidity units). The higher intensity of scattered light, higher will be turbidity. However, the turbidity of water depends upon the size, shape and composition of the suspended particle and wavelength of the incident light also.