<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:contributor>E. A. Jenne</dc:contributor>
  <dc:contributor>J.M. Burchard</dc:contributor>
  <dc:creator>V. C. Kennedy</dc:creator>
  <dc:date>1976</dc:date>
  <dc:description>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)</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.3133/wri76126</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Geological Survey (U.S.)</dc:publisher>
  <dc:title>Backflushing Filters for Field Processing of Water Samples Prior to Trace-Element Analyses</dc:title>
  <dc:type>reports</dc:type>
</oai_dc:dc>