What is BS 2782-6:Methods 620A to 620D – Testing density and relative density of non-cellular plastics about? 
BS 2782-6 is a British Standard that discusses the Methods 620A to 620D for testing density and relative density of non-cellular plastics.
Methods 620A to 620D has been prepared under the direction of the Plastics and rubber Standards Committee.
Methods 620A to 620D is one of a series of methods described in BS 2782-6 for determining the dimensional properties of non-cellular plastics.
BS 2782-6: Methods 620A to 620D specifies four methods for the determination of the density and relative density of non-cellular plastics in the form of sheet, film, tube, moulded objects, and moulding powders, granules and pellets.
Who is BS 2782-6: Methods 620A to 620D - Testing density and relative density of non-cellular plastics for? 
BS 2782-6:Methods 620A to 620D on non-cellular plastics is relevant to: 
- Manufacturers of non-cellular plastics the form of sheet, film, tube, moulded objects, and moulding powders, granules and pellets
- Plastic industry
- Product designers/product development teams
- Quality control and testing authorities
Why should you use BS 2782-6: Methods 620A to 620D- Testing density and relative density of non-cellular plastics?
Testing the density of non-cellular plastics is crucial to determine and improve its impact performance and ductility.
BS 2782-6: Methods 620A to 620D provides the best industry guidance on the following methods:
- Method A: Immersion method
- Method B: Pyknometer method
- Method C: Titration method
- Method D: Density gradient column method
Density and relative density are used frequently, both to follow the variations in the physical structures of specimens and in calculation of the amount of material necessary to fill a given volume. Density is the preferred property relating the mass and volume of an object, specimen or material. These properties may also be useful in assessing uniformity among samples or specimens. These methods are designed to yield results accurate to at least 0,2 % without applying corrections for weighings in air, and to 0,05 % with such corrections.
Thus, BS 2782-6: Methods 620A to 620D tests can determine whether or not your non-cellular plastics are fit for its intended end-use application, such that incidents of product failures can be avoided. Moreover, this assessment can make a positive contribution to your product development initiatives.
