| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 1<\/td>\n | BRITISH STANDARD <\/td>\n<\/tr>\n | ||||||
| 2<\/td>\n | National foreword <\/td>\n<\/tr>\n | ||||||
| 4<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | Introduction 1 Scope 2 Terms, definitions, symbols, units and abbreviated terms test material test specimen mass weight apparent mass <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | volume density specific volume 3 Principle 3.1 The volume of a specimen of known apparent mass is determined by measuring the change of gas … 3.2 The smaller the molecules of the gas the narrower the pores will be that can be penetrated. 3.3 Preferably gases of low affinity of adsorption onto the test material should be used. 3.4 Particularly for pressure-measuring pyknometers the accuracy of the method depends on\ufffdthe app… 4 Apparatus and materials 4.1 Analytical balance 4.2 Gas pyknometer <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 4.3 Measurement gas 4.4 Thermostatically controlled bath or enclosure 5 Test specimens 5.1 If not excluded by the conditioning procedure, dry test specimens to constant mass before car… 5.2 Test materials consisting of powder, granules, pellets or flakes can be tested as received. O… 5.3 Specimens whose change in density on conditioning may be greater than the accuracy required o… 5.4 When changes in density as a function of time or the ambient conditions are the main purpose … 6 Calibration <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 7 Procedure and calculation 8 Precision 9 Test report <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | Annex A (informative) Two-chamber pressure-type pyknometer A.1 Apparatus A.2 Calibration A.3 Procedure <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | Figure A.1 Two-chamber pressure-type gas pyknometer <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Plastics. Methods for determining the density of non-cellular plastics – Gas pyknometer method<\/b><\/p>\n |