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BS 2577:1955
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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Methylene blue particulate test for respirator canisters
Hardcopy , PDF
15-09-1994
English
31-03-1955
Test method, preparation of standard stains, description of apparatus, notes on use and maintenance. Drawings of apparatus. Obsolescent since publication of BS 4400.
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