Precision of a splitting device for water samples

Open-File Report 95-293
By: , and 



Two identical cone splitters, devices designed to split water and its suspended solids into equal aliquots for semi-volatile organic chemical and trace element analyses, were evaluated for their precision. The water-splitting evaluations consisted of experiments to test the effect of water volume, the effect of combining outlet ports, and the effect of different techniques of water introduction. The solids-splitting evaluations consisted of experi- ments to test the effect of particle size (nine different particle diameters ranging from very coarse sand to clay) and suspended-solids concentration. In general, water was equally split with a precision of less than 5 percent relative standard deviation. The accuracy of splitting the solids was a function of particle size. Clay, silt, and fine and medium sand were split with a precision relative standard deviation of less than 7 percent, and coarse sand was split with a relative standard deviation between 12 and 45 percent.

Publication type Report
Publication Subtype USGS Numbered Series
Title Precision of a splitting device for water samples
Series title Open-File Report
Series number 95-293
DOI 10.3133/ofr95293
Year Published 1995
Language English
Publisher U.S. Geological Survey
Publisher location Sacramento, CA
Contributing office(s) Minnesota Water Science Center
Description iv, 6 p.
Online Only (Y/N) N
Additional Online Files (Y/N) N
Google Analytic Metrics Metrics page
Additional publication details