ISO 3585:1998 pdf download – Borosilicate glass 3.3 – Properties
1 Scope
This International Standard specifies the characteristics of a type of glass designated “borosilicate glass 3.3” used for the construction of laboratory glassware, glass plant, pipeline and fittings.
NOTE — Annex A lists related International Standards.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards.
ISO 695:1 991 , Glass — Resistance to attack by a boiling aqueous solution of mixed alkali — Method of test and classification .
ISO 71 9:1 985, Glass — Hydrolytic resistance of glass grains at 98 ∞ C — Method of test and classification .
ISO 720:1 985, Glass — Hydrolytic resistance of glass grains at 1 21 ∞ C — Method of test and classification .
ISO 1 776:1 985, Glass — Resistance to attack by hydrochloric acid at 1 00 ∞ C — Flame emission or flame atomic absorption spectrometric method .
ISO 7884-2:1 987 , Glass — Viscosity and viscometric fixed points — Part 2: Determination of viscosity by rotation viscometers.
ISO 7884-3:1 987, Glass — Viscosity and viscometric fixed points — Part 3: Determination of viscosity by fibre elongation viscometer.
ISO 7884-4:1 987, Glass — Viscosity and viscometric fixed points — Part 4: Determination of viscosity by beam bending .
ISO 7884-8:1 987, Glass —Viscosity and viscometric fixed points — Part 8: Determination of (dilatometric) transformation temperature .
ISO 7991 :1 987, Glass — Determination of coefficient of mean linear thermal expansion
3 General requirements
The glass shall be annealed to commercially acceptable quality and shall be homogeneous enough to be free from larger inclusions which can affect the mechanical strength (i.e. refractory inclusions).
4 Chemical resistance
4.1 Hydrolytic resistance at 98 ∞C
Hydrolytic resistance shall conform to grain class ISO 71 9-HGB 1 .
For test method see ISO 71 9.
4.2 Hydrolytic resistance at 121 ∞C
Hydrolytic resistance shall conform to grain class ISO 720-HGA 1 .
For test method see ISO 720.
4.3 Acid resistance
Acid resistance shall be equivalent to a mass of sodium oxide (Na 2 O) < 1 00 mg per 1 dm 2 of glass when the glass “as a material” is tested (including preliminary acid treatment).
For test method see ISO 1 776.
4.4 Resistance to attack by a boiling aqueous solution of mixed alkali Alkali resistance shall conform to class ISO 695-A2 or better.
For test method see ISO 695.
5 Physical properties
NOTE — Property values without limiting deviations (see 5.3, 5.4 and 5.1 0 to 5.1 2) are given for guidance only. They do not specify borosilicate glass 3.3. Therefore, no test method is stated.