BS 2782-6:Methods 620A to 620D:1991
Current
The latest, up-to-date edition.
Methods of testing plastics. Dimensional properties Determination of density and relative density of non-cellular plastics - Methods 620A to 620D:Determination of density and relative density of non-cellular plastics
Hardcopy , PDF
English
26-09-2003
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1 Scope and field of application
2 References
3 Definitions
4 Conditioning
5 Methods
6 Correction for buoyancy of air
7 Test report
Annex - Liquid systems for density gradient columns
Four methods for plastics in the form of sheet, film, tube, powder, granules, etc.
| Committee |
PRI/21
|
| DevelopmentNote |
To be read in conjunction with BS 2782-0(1995) (10/2003) Supersedes BS 2782-6.620A.D(1980), BS 3715(1964) & 85/38971 DC (03/2004)
|
| DocumentType |
Standard
|
| Pages |
16
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| SupersededBy | |
| Supersedes |
1.1 This International Standard 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.
– Method A
Immersion method for plastics in a finished condition, whether machined or otherwise formed (see 5.1.3), but not powders.
– Method B
Pyknometer method for plastics in the form of powder, granules, pellets, flake or moulded articles reduced to small particles.
– Method C
Titration method for plastics in forms similar to those required for method A, including pellets.
– Method D
Density gradient column method for plastics in forms similar to those required for method A, and including pellets. Density gradient columns are columns of liquid, the densities of which increase uniformly from top to bottom. They are particularly suited to measurement of small samples of products and to comparison of densities.
| Standards | Relationship |
| ISO 1183:1987 | Identical |
| DEFSTAN 93-18/2(1989) : 1989 | PHENOLIC RESIN BONDED FABRIC MOULDINGS, NATURAL, TYPE QX |
| BS 3412:1992 | Methods of specifying general purpose polyethylene materials for moulding and extrusion |
| BS 2782-6:Method 631A:1993 | Methods of testing plastics. Dimensional properties Determination of gravimetric thickness and yield of flexible sheet |
| BS 7825-3.6:1997 | Calibration of rubber and plastics test equipment. Calibration schedules Dimensional properties |
| BS 771:1992 | Specification for phenolic moulding materials |
| BS 6404-13:1996 | Magnetic materials Methods of measurement of density, resistivity and stacking factor of electrical steel sheet and strip |
| DEFSTAN 93-116/1(2000) : 2000 | POLYETHYLENE (LOW DENSITY) FILM FOR PACKAGING TYPES 1, 2 AND 3 |
| DEFSTAN 93-10/2(1995) : 1995 | PHENOLIC MOULDINGS MADE FROM TYPE QX MATERIAL |
| BS 6564-2:1991 | Polytetrafluoroethylene (PTFE) materials and products Specification for fabricated unfilled polytetrafluoroethylene products |
| BS 4932:1973 | Specification for heavy duty low density polyethylene sacks |
| ISO 291:2008 | Plastics Standard atmospheres for conditioning and testing |
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