Name: EN ISO 18369-4:2017
Brand: CEN

Ophthalmic optics - Contact lenses - Part 4: Physicochemical properties of contact lens materials (ISO 18369-4:2017, Corrected version 2017-10-01)

Published date

20-09-2017

Publisher

Comite Europeen de Normalisation

European foreword
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Physicochemical properties of contact lenses
5 Test report
Annex A (informative) - Determination of oxygen
        permeability using the coulometric method
Annex B (informative) - Determination of water
        content by refractive index
Annex C (informative) - Calculation of oxygen
        permeability of hydrogel lenses based on
        water content
Annex D (informative) - Measurement of refractive
        index using a prism coupling device
Bibliography

ISO 18369-4:2017 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.

Committee	CEN/TC 170
DevelopmentNote	Supersedes EN ISO 10339, EN ISO 10340, EN ISO 11984, EN ISO 9913-1, EN ISO 9913-2 & EN ISO 9914. (09/2006)
DocumentType	Standard
PublisherName	Comite Europeen de Normalisation
Status	Current
Supersedes	EN ISO 9913-1 : 1998 EN ISO 10340 : 1996 EN ISO 9913-2 : 2000 EN ISO 9914 : 1996 EN ISO 10339 : 1999 EN ISO 11984 : 1999

Standards	Relationship
NF EN ISO 18369-4 : 2017	Identical
UNE-EN ISO 18369-4:2018	Identical
ONORM EN ISO 18369-4 : 2018	Identical
DIN EN ISO 18369-4 E : 2006	Identical
SN EN ISO 18369-4 : 2018	Identical
NS EN ISO 18369-4 : 2017	Identical
UNI EN ISO 18369-4 : 2007	Identical
BS EN ISO 18369-4:2017	Identical
PN EN ISO 18369-4 : 2017	Identical
DIN EN ISO 18369-4:2016-06 (Draft)	Identical
DIN EN ISO 18369-4 E : 2018	Identical
ISO 18369-4:2017	Identical
UNI EN ISO 18369-4:2018	Identical
UNE-EN ISO 18369-4:2007	Identical
NBN EN ISO 18369-4 : 2006	Identical
I.S. EN ISO 18369-4:2017&LC:2018	Identical
NEN EN ISO 18369-4 : 2017 + COR 2018	Identical

ASTM F 1927 : 2014 : REDLINE	Standard Test Method for Determination of Oxygen Gas Transmission Rate, Permeability and Permeance at Controlled Relative Humidity Through Barrier Materials Using a Coulometric Detector
ISO 18369-1:2017	Ophthalmic optics — Contact lenses — Part 1: Vocabulary, classification system and recommendations for labelling specifications
ISO 18369-2:2017	Ophthalmic optics — Contact lenses — Part 2: Tolerances
ISO 18369-3:2017	Ophthalmic optics — Contact lenses — Part 3: Measurement methods
ISO 3696:1987	Water for analytical laboratory use — Specification and test methods