BS 3145:1978
Current
The latest, up-to-date edition.
Specification for laboratory pH meters
Hardcopy , PDF
English
30-06-1978
Important note : All end users must be registered with an Account prior to user licenses being assigned.
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.
| 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 |
This British Standard specifies requirements for pH meters for laboratory use.
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