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APPLICATION
HYDRO-BIOS: Ring Trawl (CalCOFI) Net
Category: International Standard Plankton Sampler
Art.No.: 438 700
Keywords: Ring-Trawl, Ring Trawl Net
Supplier: Qingdao Watertools Technology?Co., Ltd.
Introduction:

Based on the design of California Cooperative Oceanic Fisheries Investigations (CalCOFI), the Ring Trawl Net today is the standard non-opening/non-closing plankton net for quantitative sampling of larger volumes of water during horizontal or oblique tows. The 100 cm diameter stainless steel ring, equipped with a 4 meter long net bag should be operated in conjunction with a 22 kg V-Fin depressor to create negative lift at the instrument.

For easy retrieval the sample is concentrated inside a removable plastic net bucket with side window (covered with sieve gauze). A Mechanical Flow Meter can be fixed in the net to measure the filtered water volume.

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