EN ISO 18369-4:2017
Current
The latest, up-to-date edition.
Ophthalmic optics - Contact lenses - Part 4: Physicochemical properties of contact lens materials (ISO 18369-4:2017, Corrected version 2017-10-01)
20-09-2017
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 |
| Standards | Relationship |
| NF EN ISO 18369-4 : 2017 | Identical |
| NS EN ISO 18369-4 : 2017 | Identical |
| BS EN ISO 18369-4:2017 | Identical |
| PN EN ISO 18369-4 : 2017 | Identical |
| DIN EN ISO 18369-4:2016-06 (Draft) | Identical |
| ISO 18369-4:2017 | 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 |
| UNE-EN ISO 18369-4:2018 | 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 |