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Glass Wool Pk Of 500 G For Filtering Out. Glass Wool, For filtering out fine precipitates when filter papers are unsuitable, For filtering out fine precipitates when filter papers are unsuitable, Size: pk of 500 g.

PYREX Fiber Glass. Made from fine glass fibers with diameters controlled to approximately 0.008mm. Manufactured from 9989 glass. Contains minimal amounts of heavy metals and is suitable for use as a filtering medium. Supplied in the form of roving, approximately 5cm diameter x 6.7m long. CS12