1 Scope
This part of GB/T 7962 specifies the principle of test method, measuring conditions, steps and data processing for the density of colourless optical glass.
This part is applicable to the test on density of colourless optical glass.
2 Normative references
The following documents contain provisions which, through reference in this part of GB/T 7962, constitute provisions of this part. For dated references, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest editions apply to this part.
GB 253 Kerosine
GB/T 678 Chemical reagent - Ethanol
GB/T 684 Chemical reagent - Toluene
GB/T 903 Colourless optical glass
GB/T 6682 Water for analytical laboratory use - Specification and test methods
3 Terms and definitions
For the purposes of this part, the following term and definition apply.
3.1
density
ρ
mass per unit volume of a substance at a specified temperature
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Sample
8 Test steps
9 Data processing
Annex A (Informative) Density of air, water, toluene and kerosene at different temperatures
