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BSI - BS 3145

Specification for Laboratory pH meters

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Organization: BSI
Publication Date: 30 June 1978
Status: active
Page Count: 14
ICS Code (Chemical laboratories. Laboratory equipment): 71.040.10
scope:

Covers instruments having moving index, digital, binary coded decimal and recorded outputs. Specifies the scale, maximum permitted overall error and errors arising from 12 sources, electrode input sockets, temperature compensating devices, adjustment controls, and information to be provided by the manufacturer. Test methods for assessing electrical performance.

Document History

BS 3145
June 30, 1978
Specification for Laboratory pH meters
Covers instruments having moving index, digital, binary coded decimal and recorded outputs. Specifies the scale, maximum permitted overall error and errors arising from 12 sources, electrode input...

References

This document references:
BS 2586 - Specification for Glass and Reference Electrodes for the Measurement of pH
Published by BSI on October 31, 1979
Specifies for each type of electrode for general laboratory use, performance requirements, methods of test, maximum permitted errors, other essential characteristics and information to be supplied by...
This document references:
BS 2586 - Specification for Glass and Reference Electrodes for the Measurement of pH
Published by BSI on October 31, 1979
Specifies for each type of electrode for general laboratory use, performance requirements, methods of test, maximum permitted errors, other essential characteristics and information to be supplied by...
This document references:
BS 4889 - Method for Specifying the Performance of Electrical and Electronic Measuring Equipment
Published by BSI on July 31, 1990
Also applies to instruments and accessories used with them.
This document is referenced by:
BS 5072-3 - Methods of Test for Sodium Fluoride for Industrial Use - Part 3: Determination of Fluorine Content
Published by BSI on September 30, 1975
A modified Willard-Winter method using titration with thorium nitrate solution.
This document is referenced by:
BS 4427-6 - Methods of test for Sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use — Part 6: Estimation of pyrophosphate content of sodium pyrophosphate
Published by BSI on June 7, 1974
Potentiometric method after conversion of the tetrasodium pyrophosphate to disodium dihydrogen pyrophosphate and precipitation of the pyrophosphate with liberation of sulphuric acid. Applicable to...
This document is referenced by:
BS 1647-1 - pH measurement — Part 1: Specification for pH scale
Published by BSI on December 31, 1984
Defines pH scale in terms of single reference value standard solution of potassium hydrogen phthalate and the (theoretical) slope factor
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