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

Description

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.