Ophthalmic optics - Contact lenses - Part 4: Physicochemical properties of contact lens materials
STANDARD published on 1.3.2018
Designation standards: ČSN EN ISO 18369-4
Classification mark: 195229
Catalog number: 504051
Publication date standards: 1.3.2018
The number of pages: 48
Approximate weight : 144 g (0.32 lbs)
Country: Czech technical standard
Category: Technical standards ČSN
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