ISO 18369-4:2006 specifies the methods of testing the physicochemical properties of contact lens materials. These are extraction, rigid lens flexure and breakage, oxygen permeability, refractive index and water content.
BS EN ISO 18369-4:2006 history
0000 BS EN ISO 18369-4:2017(2018)
2017BS EN ISO 18369-4:2017 Ophthalmic optics. Contact lenses. Physicochemical properties of contact lens materials
2006BS EN ISO 18369-4:2006 Ophthalmic optics - Contact lenses - Physicochemical properties of contact lens materials
1970BS EN ISO 9913-2:2000 Optics and optical instruments - Contact lenses - Part 2: Determination of oxygen permeability and transmissibility by the coulometric method
0000 BS EN ISO 10339:1999
0000 BS EN ISO 10340:1997
BS EN ISO 18369-4:2006 Ophthalmic optics - Contact lenses - Physicochemical properties of contact lens materials has been changed from BS EN ISO 11984:2000 Ophthalmic optics - Contact lenses - Determination of rigid lens flexure and breakage.
BS EN ISO 18369-4:2006 Ophthalmic optics - Contact lenses - Physicochemical properties of contact lens materials has been changed from BS EN ISO 9913-2:2000 Optics and optical instruments - Contact lenses - Part 2: Determination of oxygen permeability and transmissibility by the coulometric method.
BS EN ISO 18369-4:2006 Ophthalmic optics - Contact lenses - Physicochemical properties of contact lens materials has been changed from BS EN ISO 9914:1997 Optics and optical instruments — Contact lenses — Determination of refractive index of contact lens materials.