2017BS ISO 8255-1:2017 Microscopes. Cover glasses. Dimensional tolerances, thickness and optical properties
2011BS ISO 8255-1:2011 Microscopes. Cover glasses. Dimensional tolerances, thickness and optical properties
1989BS 7011-3.1:1989 Consumable accessories for light microscopes - Cover glasses - Specification for dimensions and optical properties
BS ISO 8255-1:2011 Microscopes. Cover glasses. Dimensional tolerances, thickness and optical properties has been changed from BS 7011-3.1:1989 Consumable accessories for light microscopes - Cover glasses - Specification for dimensions and optical properties.