NF EN ISO 1183-1, T51-037-1 (07/2025)

This document specifies three methods for determining the density of non-cellular plastics in the form of molded or extruded objects free of closed cavities, as well as powders, flakes or grains. — Method A: immersion method, for solid plastics without closed cavities (except powders). — Method B: pycnometer method in a liquid medium, for particles such as powders, flakes, grains or finished parts reduced to small pieces. — Method C: titration method, for plastics without closed cavities. NOTE Density is frequently used to track variations in the physical structure or composition of plastic materials. Density can also be useful in assessing the uniformity of samples or test pieces. The density of plastic materials often depends on the choice of sample preparation method. Where applicable, precise details of the sample preparation method should be given in the appropriate material specifications. This note applies to each of the three methods.
(Automatic translation from French)