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  • BSI
    BS 4309:1968 Methods of measuring the performance of laboratory electric resistance furnaces
    Edition: 1968
    $281.30
    / user per year

Description of BS 4309:1968 1968

This British Standard defines the important performance characteristics of general purpose laboratory electric resistance furnaces of box or tube form (the latter for use either horizontally or vertically) with exposed or concealed heating elements, and recommends appropriate methods of measuring these characteristics.

The standard is intended to apply to furnaces with rating up to about 8 kW and maximum temperature not exceeding 1 600 °C.

The tests are primarily intended for the following:

  1. Furnaces with atmospheres of air (they may, however, be applied to furnaces with other atmospheres, e.g. reducing atmospheres, where appropriate).
  2. Furnaces with static atmospheres or mechanical re-circulation.
  3. Furnaces fitted with control devices, either as supplied or fitted for the purpose of the tests only (see Clause 3).

NOTE It should be understood that this British Standard does not specify any type of furnace as to its performance or safety; or in any other way. It would thus be meaningless to state that a furnace “complies with the requirements of BS 4309”, and such a form of words should not be used.



Definitions of performance characteristics of general purpose laboratory electric resistance furnaces. Methods of measuring these characteristics.

Standard NumberBS 4309:1968
TitleMethods of measuring the performance of laboratory electric resistance furnaces
StatusConfirmed
Publication Date1968-10-25
DescriptorsFurnaces, Electric furnaces, Performance testing, Testing conditions, Resistance furnaces, Temperature measurement, Laboratory equipment, Rated power
ICS25.180.10 Electric furnaces, 71.040.10 Chemical laboratories. Laboratory equipment
CommitteeEPL/66
ISBN0 580 00143 1
PublisherBSI
Pages8

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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