Environmental Testing Catalog Dissolved Cations ASTM D6919

DCLS Method

Dissolved Cations and Hardness Determination by Ion Chromatography

Reference Method

ASTM D6919

Test Description

The test determines cations by suppressed ion ion chromatography. It is also used to calculate the hardness of drinking water.

Sample Collection

The collection is preserved to a pH of ≤2. Cations typically are preserved with nitric acid.

Storage Guidelines

Store at ≤4 degrees celcius, but not frozen.

Testing Group

Inorganics

Analytes

Calcium
Magnesium