Specification for laboratory pH meters

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

06-30-1978

Publisher

British Standards Institution

Foreword
Cooperating organizations
Specification
1. Scope
2. References
3. Definitions
4. Presentation of the measured quantity
5. Scale
6. Errors of indication
7. Input current
8. Stability
9. Glass electrode input
10. Reference electrode input
11. Temperature compensating devices
12. Set buffer adjustment
13. Slope factor adjustment
14. Electrical safety and earthing
15. Summary of information to be given in the
     literature provided with the pH meter
Appendices
A. Method of test for errors of indication
B. Method for determination of overall instrument
     error
C. Method of test for input current
D. Methods of test for isopotential and temperature
     compensation
Tables
1. Potential differences for calibrating pH scales
2. Voltages for calibrating isopotential control and
     temperature compensator

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.

This British Standard specifies requirements for pH meters for laboratory use.

Committee	W/-
DevelopmentNote	Supersedes 76/52124 DC, 86/54882 DC and BS 3422(1961) (07/2005) Reviewed and confirmed by BSI, February 2012. (01/2012)
DocumentType	Standard
Pages	14
PublisherName	British Standards Institution
Status	Current
Supersedes	BS 3422:1961 BS 3145(1976) : LATEST BS 3422(1961) : LATEST

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BS 3145:1978

Specification for laboratory pH meters

Table of Contents

Abstract

Scope

General Product Information

Standards Referenced By This Book

Standards Referencing This Book

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