• BS 1438:1971

BS 1438:1971

Specification for media for biological percolating filters

BSI Group , 09/07/1971

Publisher: BS

File Format: PDF

$132.00$264.16


Single-sized materials, 63 mm to 14 mm, including coke, clinker, gravel, crushed stone, slag for treatment of water, sewage, trade effluents. Durability; sizes; descriptions of shape, nature of surface and group classification; flakiness, cleanness, sampling and testing; supplier's certificate; independent tests. Notes on use appended.

BS 1438:1971 History

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BS 1438:1971

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$132.00 $264.16

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