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  • BS 3145:1978

    Current The latest, up-to-date edition.

    Specification for laboratory pH meters

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  30-06-1978

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    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

    Abstract - (Show below) - (Hide below)

    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.

    Scope - (Show below) - (Hide below)

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

    General Product Information - (Show below) - (Hide below)

    Committee W/-
    Development Note Supersedes 76/52124 DC, 86/54882 DC and BS 3422(1961) (07/2005) Reviewed and confirmed by BSI, February 2012. (01/2012)
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    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-n-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

    Standards Referencing This Book - (Show below) - (Hide below)

    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
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