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Ekman
採泥器
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 Don’t leave for the field without it! This convenient
kit includes all the equipment you need for obtaining
quantitative and qualitative measurements of microscopic
bottom fauna. Best of all, everything fits in our included
plywood carry case. The case is 457 x 495 x 368 mm (18 x
19½ x 14½”) in size, varnished from
protection and with a sturdy handle.
196-B31 Field Kit includes:
• Standard Ekman Bottom Grab (196-B15)
• Messenger (45-B10)
• Braided polyester line, 100’ (62-C15)
• Washbucket (196-E20)
196-B33 Field Kit includes:
• Standard Ekman Bottom Grab (196-B15)
• Messenger (45-B10)
• Braided polyester line, 100’ (62-C15)
• Washbucket (196-E20)
• Ekman extension handle, 5’ (196-F30) |
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Ekman
採泥器
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• Scoops overlap to reduce sample loss
• Dependable release closing
• 316 or 18-8 stainless steel construction
• Lightweight yet stable due to wide base
• Extra weights available
• Center pivot for low bottom disturbance
This is the grab to choose for soft, finely divided
littoral bottoms that are free from vegetation, such as
sticks and decayed leaves (or with short, erect vegetation
only) as well as intermixtures of sand, stones and other
coarse debris. The specialized function of this dredge is
the taking of quantitative and qualitative samples of
macroscopic bottom fauna to determine the productivity of
soft bottoms, particularly those composed of finely
divided muck, mud, ooze, submerged marl and fine peaty
materials. Versatile and durable, it is suited for
preliminary as well as more precise observation. It is not
recommended for rocky or sandy bottoms or moderate
macrophyte growth because small pebbles or macrophyte
stems prevent proper jaw closure.
Two thin, hinged overlapping lids on top open during
descent to let water pass through. They close during
retrieval and are held shut by water pressure to reduce
washout. The closing springs easily unhook from their
loaded position for safe handling during transportation
and storage. An important and distinguishing feature of
the design is the messenger-operated Twin-pin™
scoop release mechanism. This release is very reliable,
has few working parts and is the best of its type in the
field. To operate, attach to a line and pass through the
trip mechanism. Set the springs over the knobs and pull
the jaws completely apart. Lower the dredge till it rests
on the bottom and send a messenger down the line, allowing
the springs to close the scoops. These samplers require a
messenger and line (not included, except in kits) for
operation.
• Safe, reliable closing mechanism
• All stainless steel construction
• Extra weights fit standard and tall Ekmans
• Extension handles replace messengers in shallow
water
• Kits include 45-B10 messenger, 62-C15 line and
case.
• Sampler and cases also available separately
• Heavy duty springs on tall and large versions.
• Wide base yields good stability despite its light
weight |
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各式採泥器
底棲拖網
浮游生物
Plankton Samplers, Plankton Nets, Water Samplers,…
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