AS 2234-1995

1 - AS 2234-1995 BEAKERS
4 - PREFACE
4 - CONTENTS
5 - 1 SCOPE
5 - 2 REFERENCED DOCUMENTS
5 - 3 TYPES OF BEAKERS
5 - 4 CAPACITIES OF BEAKERS
5 - 4.1 Nominal capacities
5 - 4.2 Overflow capacity
5 - 5 MATERIAL
5 - 5.1 General
5 - 5.2 Hydrolytic resistance
6 - 5.3 Thermal shock resistance
6 - 6 CONSTRUCTION
6 - 6.1 Base
6 - 6.2 Side
6 - 6.3 Rim
6 - 6.4 Pouring lip
6 - 7 DIMENSIONS
6 - 7.1 External diameter and height
6 - 7.2 Thickness of glass
6 - 7.2.1 Minimum thickness
6 - 7.2.2 Uniformity of thickness
6 - 7.2.3 Rule of change of thickness
6 - 7.3 Radius at base
6 - 7.3.1 Beakers of nominal capacity 250 mL or greater
6 - 7.3.2 Beakers of nominal capacity less than 250 mL
6 - 8 GRADUATED SCALE
7 - 9 MARKING
8 - APPENDIX A - METHOD FOR THE DETERMINATION OF THE HYDROLYTIC RESISTANCE OF GLASS GRAINS AT 98°C
8 - A1 SCOPE
8 - A2 PRINCIPLE
8 - A3 APPARATUS
10 - A4 REAGENTS
10 - A4.1 Distilled water or deionized water
10 - A4.2 Citric acid (0.1 mol/L)
10 - A4.3 Hydrochloric acid (0.01 mol/L)
10 - A4.4 Disodium hydrogen phosphate (0.2 mol/L)
10 - A4.5 Buffer solution (pH = 5.2)
10 - A4.6 Methyl red indicator
10 - A5 PREPARATION
10 - A6 PROCEDURE
11 - A7 EXPRESSION OF RESULTS
11 - A8 REPORT
12 - APPENDIX B - METHODS FOR THERMAL SHOCK TESTS ON LABORATORY GLASSWARE
12 - B1 SCOPE
12 - B2 DEFINITION
12 - B3 PRINCIPLE
12 - B4 SAMPLING
12 - B5 APPARATUS
12 - B5.1 Method A
12 - B5.2 Method B
12 - B5.3 Method C
13 - B6 PROCEDURE
13 - B6.1 Method A
13 - B6.2 Method B
13 - B6.3 Method C
13 - B7 RESULT OF TEST
13 - B8 REPORT

Specifies two series of glass beakers, viz. low form and tall form, each with or without pouring lips, for general laboratory use.

This Standard describes two series of glass beakers, with or without pouring lips, for general laboratory use.

First published as AS 2234-1979.
Second edition 1995.