ENVIRONMENTAL TESTING CATALOG SM 2320 B

DCLS Method

Alkalinity by potentiometric titration

Reference Method

SM 2320 B

Test Description

Alkalinity is measured volumetrically by titration with 0.02N H2SO4 and is reported in terms of equivalent CaCO3. The construction of a titration curve by recording sample pH after successive small measured additions of titrant permits identification of inflection points and buffering capacity, if any, and allows the alkalinity to be determined with respect to any pH of interest.

Sample Collection

Resistant-glass or plastic, 2-6 °C.

Storage Guidelines

The sample should be refrigerated at ≤4 °C. Samples are shipped to the lab at ≤4 °C.

Testing Group

Inorganics

Analyte

Alkalinity