BS 3828:1973

Co-operating organizations
Foreword
Section 0. General
0.1 Scope
Section 1. Crystal glass complying only EEC Directive
1.1 Scope of Section 1
1.2 Designation
1.3 Chemical composition
1.4 Physical properties
1.5 Labelling
1.6 Use of the BS number
Annexes
I List of categories of crystal glass
II Methods for determination of chemical and physical
     properties of the categories of crystal glass
Section 2. Crystal glass complying both with EEC
            Directive and with certain additional
            requirements
2.1 Scope of Section 2
2.2 Requirements
2.3 Test methods
2.4 Quality of articles
2.5 Marking of articles
Appendix
A Suitable methods of test (for use only in
     connection with Section 2)
Figure
1 Suitable apparatus for the determination of
     refractive index

Section 1 covers 4 categories of glass, is technically identical with the EEC Directive on crystal glass and is intended for reference in the statutory instrument which will implement this Directive in the UK. Section 2 incorporates certain requirements additional to those in the EEC Directive for the two higher categories of glass, and in effect maintains the superior qualities of glasses of UK manufacture complying with the previous edition.

This British Standard specifies requirements for chemical composition and physical properties of categories of glass used in the manufacture of crystal glassware, together with appropriate test methods and marking provisions.

Section 1 specifies four categories of glass, as defined in the corresponding Directive of the Council of the Economic Communities.

Section 2 specifies additional requirements relating to only two of these categories of glass.

NOTE The title of the British Standard referred to in Section 2 of this standard is given on page 8.