EPA Method 310.1

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View Actual EPA Method 310.1 (PDF File)


EPA Method 310.1:
Alkalinity by Titration. Official Name: Alkalinity (Titrimetric, pH 4.5)

Summary:
An unaltered sample is titrated to an electrometrically determined end point of pH 4.5. The sample must not be filtered, diluted, concentrated, or altered in any way.

Scope:
This method is applicable to drinking, surface, and saline waters; domestic and industrial wastes. The method is suitable for all concentration ranges of alkalinity; however appropriate aliquots should be used to avoid a titration volume greater than 50mL.

Citation:
Methods for the Chemical Analysis of Water and Wastes (MCAWW) (EPA/600/4-79/020)

Interferences:
Substances, such as salts of weak organic and inorganic acids present in large amounts, may cause interference in the electrometric pH measurements.

QC Requirements:
None.

Maximum Holding Time:
14 days.

Media:
WATER

Subcategory:
Inorganic

Concentration:
Not Available.

Sample Prep:
None.

Precision:
Precision and accuracy values were calculated using interlaboratory data from EPA-managed Water Pollution (WP) performance evaluation studies.

Detection:
None.

Revision Number:
Issued 1971; Editorial Revision 1978

Test Description:
Alkalinity - Titrime

Report Number:
600/4-79-020

Instrument used for this test:
Buret