ENVIRONMENTAL TESTING CATALOG SM 2130 B

DCLS Method

Turbidity in water by Nephelometry

Reference Method

SM 2130 B

Test Description

Turbidity in water is caused by the presence of suspended and colloidal matter such as clay,silt or finely divided organic and inorganic matter. Turbidity is the expression of the optical property that causes light to be scattered and absorbed rather than transmitted with no change in direction through the sample.

Sample Collection

Collect approximately 90 ml of representative sample in a sampling container.

Storage Guidelines

Samples must be cooled to <= 4 °C after collection, and preferably shipped to the lab within 24 hours. If samples will not be analyzed within 24 hours after collection, then store samples at <=4 °C for up to 28 days following collection.

Testing Group

Inorganics

Analyte

Turbidity