LaMotte BRASS BOTTOM SAMPLING DREDGE 1061 - Manual (Page 4)

IN STRUC TIONS FOR USE
The Bottom Sampling Dredge is shipped completely assembled. The
dredge has a bridle that reaches between the tips of the brass arms of the
dredge. Note that when the bridle is free (no tension upon it), the dredge
springs open. When the dredge is lifted by the bridle, the jaws of the
dredge snap shut.
A line is attached to the middle of the bridle to retrieve the dredge from
the bottom. Affix this line securely. The dredge must be allowed to fall
freely through the water. There must be no tension on the retrieving line
until the dredge has made contact with the bottom. There are holes in the
upper part of the collection chamber to let air escape from inside the
chamber, thus speeding the descent of the dredge. When the dredge has
made contact with the bottom, pull up on the retrieving line with a
smooth, steady hand over hand action without jerking the line, until the
dredge is above the water surface. Hold the dredge by the retrieving line or
by the middle of the bridle until you are ready to place the contents of the
dredge into a collecting container. If tension on the bridle is relaxed, the
jaws will spring open before the desired time and the contents will be lost.
A white porcelain or plastic pan provides an excellent receptacle for
examining the sample.
LaMOTTE COM PANY
Helping Peo ple Solve An a lyt i cal Chal lenges SM
PO Box 329 • Chestertown • Mary land • 21620 • USA
800-344-3100 • 410-778-3100 (Out side U.S.A.) • Fax 410-778-6394
Visit us on the web at www.lamotte.com
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