NEMI Method Summary


Method Summary Information

Method Number:

D1293A

Media:

WATER

Revision:

1995

Method Source:

ASTM International

Subcategory:

PHYSICAL

Analytes in this method

Official Name:

Standard Test Methods for pH of Water

Descriptive Name

pH: Method A: Precise Laboratory Measurement of pH

Source Info:

ASTM International
100 Barr Harbor Drive West
Conshohocken, PA 19428
Telephone: (610) 832-9500
Fax: (610) 832-9555
Email: service@astm.org

Citation:

ASTM Volume 11.01

Brief Method
Summary:

The pH meter and associated electrodes are standardized against two reference buffer solutions that closely bracket the anticipated sample pH. The sample measurement is made under strictly controlled conditions and prescribed techniques.

Scope And
Application:

This test method covers the precise measurement of pH in water under strictly controlled laboratory conditions.

Applicable
Conc Range:

1.0 - 12.0 pH

Interferences:

The glass electrode reliably measures pH in nearly all aqueous solutions and in general is not subject to solution interference from color, turbidity, colloidal matter, oxidants, or reductants. The glass electrode reliably measures pH in nearly all aqueous solutions and in general is not subject to solution interference from color, turbidity, colloidal matter, oxidants, or reductants. The reference electrode may be subject to interferences and should be chosen to conform to all requirements of the Method.

QC Requirements:

Sample Handling:

Collect samples in accordance with Practice D 1066, Specification D 1192, or Practices D 3370, whichever is applicable.

Max Holding Time:

Relative Cost:

Less than $50

URL to obtain ordering information for this method:

http://www.astm.org/cgi-bin/SoftCart.exe/DATABASE.CART/PAGES/D1293.htm?E+mystore

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Method Summary Information