3. Control
3.1 Control methods
The structural parameters of high-density polyethylene are measured using laboratory techniques of varying degrees of sophistication.
SCROLL TO TOPThe degree of crystallinity can be measured by differential thermal analysis, X-ray diffraction or infrared spectroscopy. Indirectly, density measurement provides an estimate of crystallinity. Routine checks focus on density measurement. This is carried out in accordance with NF/EN ISO 1183. In most cases,...
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Control
Properties
Bibliography
Regulations
NF 388 mark – Plastic tanks used for unburied storage of domestic heating oil.
NF 114 mark – Polyethylene pipes for combustible gas distribution networks, drinking water distribution networks, irrigation and industrial applications, non-drinking water and pressurized wastewater systems.
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