Backflushing Filters for Field Processing of Water Samples Prior to Trace-Element Analyses
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)
Citation Information
Publication Year | 1976 |
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Title | Backflushing Filters for Field Processing of Water Samples Prior to Trace-Element Analyses |
DOI | 10.3133/wri76126 |
Authors | V. C. Kennedy, E. A. Jenne, J.M. Burchard |
Publication Type | Report |
Publication Subtype | USGS Numbered Series |
Series Title | Water-Resources Investigations Report |
Series Number | 76-126 |
Index ID | wri76126 |
Record Source | USGS Publications Warehouse |
USGS Organization | U.S. Geological Survey |