Donaldson Membranes have now added their Polyester Epitropic / ePTFE membrane filter media range to their expanding portfolio of certified antistatic products for use in explosive fabric filter applications. EC ATEX Directives require that filter media intended for use in potentially explosive environments must return a maximum electrical resistance of 1x108 Ohms (Q), both laterally and cross-directionally (across and through the media). In contrast to their already certified products which incorporate Stainless Steel fibres in the substrate of the Tetratex ePTFE membrane filter laminate, the latest developments utilise Epitropic fibres (carbon impregnated Polyester) to provide the requisite conductivity.
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