Record Display for the EPA National Library Catalog

RECORD NUMBER: 8 OF 13

OLS Field Name OLS Field Data
Main Title New Multiple Sieve Design for Screening Bottom Samples.
Author Peter, David N. ; Redma, Tommy N. ;
CORP Author Robert S. Kerr Water Research Center, Ada, Okla.
Year Published 1969
Stock Number PB-214 923
Additional Subjects ( Aquatic animals ; Sieves) ; ( Sieves ; Samplers) ; Invertebrates ; Size screening ;
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB-214 923 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 7p
Abstract
Sampling devices used by aquatic biologists to collect macroinvertebrates in a lake or stream vary with the kind of substrate to be sampled. Even when properly used, these sampling devices collect large amounts of debris which may prevent the biologist from efficiently concentrating or separating macroinvertebrates in the sample. A combined washing-screening process, conducted immediately following collection, is the best procedure for concentrating and separating organisms from the sample. This procedure is usually accomplished with a No. 30 U. S. Standard Sieve (openings of approximately 0.6 millimeter) that retains macroinvertebrates. The design and utilization of this device is described.