NEN EN ISO 12870 : 2012

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
   4.1 General
   4.2 Physiological compatibility
   4.3 Measurement system
   4.4 Dimensional tolerances on nominal size
   4.5 Tolerance on screw threads
   4.6 Dimensional stability at elevated temperature
   4.7 Resistance to perspiration
   4.8 Mechanical stability
   4.9 Resistance to ignition
   4.10 Resistance to optical radiation
5 Selection of test samples
   5.1 General
   5.2 Testing for nickel release
   5.3 Change in spectacle frame model
6 Preparation and conditioning of test samples
   6.1 Test lenses
   6.2 Sample conditioning and test conditions
7 Testing, inspection and compliance
   7.1 Testing
   7.2 Inspection and examination
   7.3 Compliance
8 Test methods
   8.1 General
   8.2 Test for dimensional stability at elevated
        temperature
   8.3 Test for resistance to perspiration
   8.4 Bridge deformation test
   8.5 Endurance test
   8.6 Test for resistance to ignition
   8.7 Test for resistance to optical radiation
   8.8 Nickel release
9 Marking
10 Additional information to be supplied by the
   manufacturer or other person (agent) placing the
   product on the market
11 Reference to ISO 12870
Annex A (informative) Recommendations for the design
        of spectacle frames
Annex B (informative) Examples of layout of test equipment
Annex C (informative) Examples of cutting metal spectacle
        frames before testing for nickel release
Bibliography

Defines fundamental requirements for unglazed spectacle frames designed for use with all prescription lenses.