Turbidity has long been used as an indicator of water quality. This parameter is used to assess the overall performance of water treatment processes that produce water for human consumption. Regulatory agencies, such as the US EPA, establish maximum turbidity limits for drinking water.
The measurement of water samples with low turbidities are susceptible to unique interferences that are not observed at higher turbidity levels. So how do we know the results displayed by a turbidimeter are correct or true? To satisfy regulatory requirements, turbidimeters are calibrated and verified on a routine basis. But the traceability of these processes is sometimes unclear.
In this discussion, we will cover the use, accuracy and traceability of primary and secondary turbidity standards. Here’s what you’ll learn from turbidity expert, Mike Sadar:
• Why turbidity matters & why it’s a regulated parameter.
• The role of calibration and verification procedures in a regulatory environment
• Why Formazin is the primary standard for turbidity and how its different from other
types of commercially available standards.