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ISO 18369-4
M00000519
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ISO 18369-4 2nd Edition, August 1, 2017 Ophthalmic optics - Contact lenses - Part 4: Physicochemical properties of contact lens materials
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Description / Abstract: This document 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.