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 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
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. |
PUB Date Free Form |
Jul 69, |
Category Codes |
6C; 57Z |
NTIS Prices |
PC A02/MF A01 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
326538796 |
Origin |
NTIS |
Type |
CAT |