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Backflushing Filters for Field Processing of Water Samples Prior to Trace-Element Analyses

Water-Resources Investigations Report 76-126

By:
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Abstract

A portable unit is described for filtering water samples at field sites in such a manner that the filtrate is suitable for analysis not only of major constituents but also of trace elments at the mocrogram-per-liter level. A battery-operated peristaltic pump forces the water sample through medical-grade silicone tubing into and through an all-plastic in-line filter which can be backflushed when sediment clogs the filter membrane. Initial filtration rate exceeds 500 milliliter/minute and, because of the backflushing feature, a total time for filtering high-sediment-bearing waster samples is greatly reduced. (Woodard-USGS)

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Backflushing Filters for Field Processing of Water Samples Prior to Trace-Element Analyses
Series title:
Water-Resources Investigations Report
Series number:
76-126
Edition:
WRI/OFR 76-126
Year Published:
1976
Language:
ENGLISH
Publisher:
Geological Survey (U.S.)
Contributing office(s):
U.S. Geological Survey
Description:
iii, 12 p.