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  • BS 679:1959

BS 679:1959

Specification for filters for use during welding and similar industrial operations

BSI Group , 02/28/1977

Publisher: BS

File Format: PDF

$132.00$264.16


Standard By:BSI Group , 02/28/1977
Published:02/28/1977
ISBN(s):0580005798
Language:English
Note:This product is unavailable in Ukraine, Russia, Belarus
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.

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