BS 679:1959
Withdrawn
View Superseded by
Specification for filters for use during welding and similar industrial operations
Hardcopy
English
02-28-1977
06-30-1989
Classifies filters into shades according to visual density, recommends shades for various industrial uses. Visual density, protection against ultra-violet radiation, total-heat protection, antiglare protection, refractive properties, freedom from optical imperfections, uniformity of density, permanence, quality of cover glasses, colour grading, and (for plastics filters) flammability tests.
| Committee |
PH/2
|
| DocumentType |
Standard
|
| Pages |
0
|
| PublisherName |
British Standards Institution
|
| Status |
Withdrawn
|
| SupersededBy |
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