BS EN 1748-1:1998

Foreword
1 Scope
2 Normative references
3 Definitions
4 Chemical composition
    4.1 Principal constituents
    4.2 Tint
5 Physical and mechanical characteristics
    5.1 General characteristics
    5.2 Definition of clear borosilicate glass
    5.3 Stability of physical and chemical characteristics
6 Dimensional requirements
    6.1 Thickness and tolerances
    6.2 Length, width, squareness and tolerances
7 Quality requirements
    7.1 Classification
    7.2 Faults
    7.3 Methods of observation and measurement
    7.4 Acceptance levels
8 Designation

Specifies and classifies borosilicate glasses to be used in building, indicating their chemical composition, main physical and mechanical properties, dimensional and minimum quality requirements (in respect of optical and visual faults). Applicable only to borosilicate glasses in stock sizes, and not to borosilicate glasses supplied in cut sizes for final end use.