BS 3145:1978
Current
The latest, up-to-date edition.
Specification for laboratory pH meters
Hardcopy , PDF
English
30-06-1978
Important note : Users cannot be edited or removed once added to your Multi user PDF.
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.
| BS 5763-5:1981 | Methods for microbiological examination of food and animal feeding stuffs Enumeration of micro-organisms. Colony count at 30°C (surface plate technique) |
| BS 4993-2:1974 | Methods of test for aluminium fluoride for industrial use Determination of iron content |
| DEFSTAN 91-70/1(1990) : 1990 | CUTTING FLUID, SOLUBLE, BIOSTABLE - JOINT SERVICE DESIGNATION ZX-9 |
| BS 3958-2:1982 | Thermal insulating materials Calcium silicate preformed insulation |
| BS 3958-5:1986 | Thermal insulating materials Specification for bonded man-made mineral fibre slabs |
| BS 5117-1.1:1985 | Testing corrosion inhibiting, engine coolant concentrate (\'antifreeze\'). Methods of test for determination of physical and chemical properties Ancillary procedures |
| BS 5803-2:1985 | Thermal insulation for use in pitched roof spaces in dwellings Specification for man-made mineral fibre thermal insulation in pelleted or granular form for application by blowing |
| BS 3958-4:1982 | Thermal insulating materials Bonded preformed man-made mineral fibre pipe sections |
| BS 7825-2:1996 | Calibration of rubber and plastics test equipment Calibration procedures |
| BS 4993-1:1974 | Methods of test for aluminium fluoride for industrial use Determination of fluorine content |
| BS 7310:1990 | Specification for ion-selective electrodes, reference electrodes, combination electrodes and ion-selective electrode meters for determination of ions in solution |
| BS 5050:1974 | Methods of test for cryolite |
| BS 1133-21:1991 | Packaging code Regenerated cellulose film, films made of plastics, aluminium foil, flexible multilayer structures and metallized materials |
| BS 5711-22:1979 | Methods of sampling and test for glycerol Additional methods of test (non-specification) |
| BS 3958-3:1985 | Thermal insulating materials Metal mesh faced man-made mineral fibre mattresses |
| BS 3482-3:1991 | Methods of test for desiccants Determination of pH |
| BS 1647-1:1984 | pH measurement Specification for pH scale |
| BS 6810-2:2005 | Determination of metals in textiles Analysis by atomic emission spectroscopy |
| BS 4993-3:1974 | Methods of test for aluminium fluoride for industrial use Determination of silica content |
| BS 5658:1979 | Specification for gold potassium cyanide for electroplating |
| BS 5136:1981 | Specification for toothpastes |
| BS 5666-7:1991 | Methods of analysis of wood preservatives and treated timber Quantitative analysis of preservatives containing bis(tri-<i>n</i>-butyltin)oxide : determination of total tin |
| BS 5711-3:1979 | Methods of sampling and test for glycerol Determination of glycerol content |
| BS 4072:1999 | Copper/chromium/arsenic preparations for wood preservation |
| BS EN ISO 10344:1998 | Optics and optical instruments. Contact lenses. Saline solution for contact lens testing |
| BS 1170:1983 | Recommendations for treatment of water for marine boilers |
| BS 3762-3.18:1986 | Analysis of formulated detergents Quantitative test methods - Method for determination of chlorine oxidizing agents content |
| BS 4088-1.1:1994 | Carpet cleaning products. Methods of sampling and test General methods for formulations used in liquid form |
| BS 1427:1993 | Guide to field and on-site test methods for the analysis of waters |
| BS 2586:1979 | Specification for glass and reference electrodes for the measurement of pH |
| BS 3958-1:1982 | Thermal insulating materials Magnesia preformed insulation |
| BS 4088-1.3:1995 | Carpet cleaning products. Methods of sampling and test General methods for impregnated powder formulations |
| BS 5086-7:1991 | Analysis of butter Method for determination of pH of butter serum |
| BS 2972:1989 | Methods of test for inorganic thermal insulating materials |
| BS 5072-3:1975 | Methods of test for sodium fluoride for industrial use Determination of fluorine content |
| BS 1427:2009 | Guide to on-site test methods for the analysis of waters |
| BS 4410(1969) : LATEST | CONNECTION OF FLEXIBLE CABLES AND CORDS TO APPLIANCES (REQUIREMENTS INCORPORATED IN THE IEE REGULATIONS FOR THE ELECTRICAL EQUIPMENT OF BUILDINGS) |
| BS 3693-2:1969 | Recommendations for the design of scales and indexes Indicating instruments to be read to 0.33-1.25% resolution |
| BS 4743:1971 | Specification for safety requirements of electronic measuring apparatus |
| BS CP1003(1948) : LATEST | INSTALLATION & MAINTENANCE OF FLAMEPROOF AND INTRINSICALLY-SAFE ELECTRICAL EQUIPMENT FOR INDUSTRIES OTHER THAN COAL MINING |
| BS 2586:1965 | Glass electrodes for the measurement of pH |
| BS 4889:1973 | Method for specifying the performance of electronic measuring equipment |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.