Resumen
ϲʿ 29463-4:2011 specifies the test procedure of the "scan method", considered to be the reference method, for determining the leakage of filter elements. It is applicable to filters ranging from classes ϲʿ 35 H to ϲʿ 75 U. ϲʿ 29463-4:2011 also describes the other normative methods: the oil thread leak test and the photometer leak test, applicable to classes ϲʿ 35 H to ϲʿ 45 H HEPA filters, and the leak test with solid PSL aerosol. ϲʿ 29463-4:2011 is intended for use in conjunction with ϲʿ 29463-1, ϲʿ 29463-2, ϲʿ 29463-3 and ϲʿ 29463-5.
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