Specification for red and green filters used in ophthalmic dichromatic and dissociation tests Ingestion-build-50790 Some text has been deleted

Some text has been deleted from clause 5

nor from a significant hazard to life

BS EN ISO 15351 is an International Standard which specifies a thermal conductimetric method after fusion under inert gas for the determination of nitrogen in steel and iron

BS ISO 4254-9 does not apply to:

Recommendation for the maximum length of a dental explorer was reduced from 178 mm to 173 mm in 4

Specification for red and green filters used in ophthalmic dichromatic and dissociation tests Ingestion-build-50790 Some text has been deleted1 Scope This British Standard specifies requirements for red and green filters of glass or plastics materials used in ophthalmic tests as follows: a) dichromatic tests for ametropia, and b) dissociating the eyes in various tests of binocular co operation.