BS 2782-6 Method 643B:1996 - Method of testing Plastics- Dimensional properties - Method 643B. Determination of dimensional change on heating of film and sheeting
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BS 2782-6 Method 643B:1996 is a British Standard that pertains to the testing of plastics. Specifically, it outlines a method for determining the density of rigid cellular plastics using a water displacement technique.
The full title of this standard is "Methods of testing plastics — Part 6: Physical properties — Section 6.43: Determination of density of rigid cellular plastics — Immersion method." It was published in 1996 by the British Standards Institution (BSI).
The method described in BS 2782-6 Method 643B involves immersing a test specimen of rigid cellular plastic in water and measuring the volume of water displaced. The density of the material can then be calculated by dividing the mass of the test specimen by its volume.
It's worth noting that British Standards may be revised or updated over time. Therefore, it is always advisable to consult the most recent version or any relevant amendments or revisions if available.
BS 2782-6 Method 643B:1996 - Method of testing Plastics- Dimensional properties - Method 643B. Determination of dimensional change on heating of film and sheeting