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This part of IEC 60794 is a generic specification covering buffer tubes (or loose tubes) with optical fibres to be used as optical cable element.
Buffer tube is commonly used as optical cable element, especially in outdoor optical cables. IEC 60794-1-3 series are generic specifications for optical cable elements. Currently, they don't cover buffer tube. Some parameters shall be measured on buffer tubes since the corresponding tests on the optical fibres, fibre ribbons or finished cable are not sufficient for complete characterization. Therefore a generic specification for buffer tube is needed.
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