BS EN ISO 18369-4:2017
Current
The latest, up-to-date edition.
Ophthalmic optics. Contact lenses Physicochemical properties of contact lens materials
Hardcopy , PDF
English
30-04-2018
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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
Defines the methods of testing the physicochemical properties of contact lens materials.
| Committee |
CH/172/9
|
| DevelopmentNote |
Supersedes BS EN ISO 10339, BS EN ISO 10340, BS EN ISO 11984, BS EN ISO 9913-1, BS EN ISO 9913-2, BS EN ISO 9914, BS 7208-13(1997), BS 7208-23(2000), BS 7208-5(1997), BS 7208-6(1997) & 04/30088803 DC. (10/2006) Supersedes 16/30310665 DC. (10/2017)
|
| DocumentType |
Standard
|
| Pages |
44
|
| ProductNote |
THIS STANDARD IS IDENTICAL TO EN ISO 18369-4 : 2017
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
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.
| Standards | Relationship |
| DIN EN ISO 18369-4:2016-06 (Draft) | Identical |
| ISO 18369-4:2017 | Identical |
| UNE-EN ISO 18369-4:2007 | Identical |
| EN ISO 18369-4:2017 | Identical |
| NBN EN ISO 18369-4 : 2006 | Identical |
| UNI EN ISO 18369-4 : 2007 | Identical |
| I.S. EN ISO 18369-4:2017&LC:2018 | Identical |
| ONORM EN ISO 18369-4 : 2018 | Identical |
| SN EN ISO 18369-4 : 2018 | Identical |
| NF EN ISO 18369-4 : 2017 | Identical |
| NS EN ISO 18369-4 : 2017 | 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 |
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