BS 1438:1971
Withdrawn
Date published:
Specification for media for biological percolating filters
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.
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BS 1438:1971
Get this standard
Prices exclude GST
PDF
( Single user document)
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HardCopy
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