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Dredge
Samplers |
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Bottom
Sampling Dredges |
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Ponar
Dredge Sampler
For sampling hard bottoms such as sands, gravel and clays
Widely used for quantitative samplings of benthic macro organisms in sand, gravel and clays. The self-tripping sampler features centre hinged jaws and a spring loaded pin that releases when the sampler makes impact with the bottom. Features include an underlip attachment that cleans gravel from the jaws that would normally prevent closing and removable side plates that prevent lateral loss of sample. The top is covered with a stainless steel screen with neoprene rubber flaps which allows water to flow through for a controlled descent and less interference with the sample.
The standard 230mm x 230mm (9" x 9") Ponar weighs 20kg (50 lbs.) empty and should be used with a winch and cable. Sample volume 8200ml.
Petite Ponar is 150mm x 150mm (6" x 6") and weighs 11 kg (24 lbs.) Sample volume 2400ml. Constructed of stainless steel with zinc plated steel arms and weights. Safety pin prevents premature closing.
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Van Veen Grab Sampler
Simple design for taking composite samples:
The stainless steel Van Veen grab samplers are used for the taking of disturbed samples from the bottom of lakes, rivers etc. The jaws are pushed open at the surface, and kept open by a fastened hook. Then, after being lowered slowly, the jaws touch the bottom, and the hook loosens it’s grip, so that the jaws shut tight as it’s hoisted back up. |
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Ekman Bottom Grab Sampler
For sampling lakes, streams and rivers
Designed for sampling in soft, finely divided bottoms that are free from vegetation and other coarse debris. Each sampler features machined jaws and hinged overlapping lids that open easily during descent to let water pass through and close during retrieval to reduce sample washout. The patented Two-Pin release mechanism has few moving parts and is very reliable. Each sampler is constructed of 316 stainless steel, including the springs, cables and fasteners. Sampler measures 150mm x 150mm x 150mm (6" x 6" x 6" - 216 cu. in.).
Available separately or in kit form with stainless messenger, 30meters (100 ft.) line and carrying case. Optional extension handle permits easier shallow water operation. The handle is constructed of galvanised pipe and stainless steel and is available in 1.5m (5 ft.) or 3m(10 ft.) lengths. |
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Ordering
Information |
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| B223576 |
Standard Ponar 230 mm x 230 mm,
20kg |
| B223578 |
Petite Ponar 150 mm x 150 mm,
12kg (Rentable) |
| E04.30.01 |
Van Veen dredge
sampler, 0.5 Litre, 125cm2, 3kg |
| E04.30.02 |
Van Veen Dredge Sampler, 2.0
Litre, 250cm2, 10 kg |
| E04.30.03 |
Van Veen Dredge Sampler, 6.0
Litre, 500cm2, 26kg |
| E04.30.05 |
Van Veen Dredge Sampler, 12.0
Litre, 800cm2, 43 kg |
| B223570 |
Ekman Sampling Kit |
| B223571 |
Ekman Sampler Only |
| B223573 |
1.5m (5 ft.) Extension Handle |
| B223574 |
3m (10 ft.) Extension Handle |
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