ISO 4589-3:2017 specifies methods for determining the minimum volume fraction of oxygen, in a mixture with nitrogen, that will support combustion of small vertical test specimens under specified test conditions over a range of temperatures between 25 °C and 150 °C. The results are defined as temperature index values at the test temperature.
Specifies methods for exposing specimens to fluorescent UV radiation, heat and water in apparatus designed to simulate the weathering effects that occur when materials are exposed in actual end-use environments to global solar radiation, or to solar radiation through window glass.
The specimens are exposed to fluorescent UV lamps under controlled environmental conditions (temperature, humidity and/or water). Different types of fluorescent UV lamp can be used to meet all the requirements for testing different materials.
Specimen preparation and evaluation of the results are covered in other International Standards for specific materials.
General guidance is given in ISO 4892‑1.
NOTE Fluorescent UV lamp exposures for paints, varnishes and other coatings are described in ISO 11507.
ISO 4892 provides information and general guidance relevant to the selection and operation of the methods of exposure described in detail in subsequent parts. It also describes general performance requirements for devices used for exposing plastics to laboratory light sources of radiation. This part of ISO 4892 also provides information on the interpretation of data from artificial accelerated weathering or artificial accelerated irradiation exposures.
EN 13598‑2 specifies the definitions and requirements for unplasticized poly (vinyl chloride) (PVC-U), polypropylene (PP) and polyethene (PE) manholes and inspection chambers intended for non-pressure underground drainage and sewerage systems, up to a maximum depth of 6 m from ground level to the invert of the manhole or inspection chamber.
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