HYDROBIOS WP2 Closing Net Small oceanographic closing net for vertical operations

WP2 Closing Net

Small oceanographic closing net for vertical operations

ABOUT

Based on the design of the UNESCO Working Party 2, the WP2 Closing Net is a vertical plankton net with messenger operated closing mechanism. A 57 cm diameter stainless steel ring with a 2.6 meter long net bag (default 200µm, or as per choice) is operated in conjunction with a heavy net bucket frame for high towing rope speed during descent. For easy retrieval the sample is concentrated inside a removable plastic net bucket with side window (covered with sieve gauze). The open net is brought to the greatest scheduled depth. During ascent the net can be closed in the intended depth by strangulating the net bag below the net ring. This allows for sampling defined depth layers. The WP2 Closing Net can be used in conjunction with one Mechanical Flow Meter with back-run stop for measurements of filtered water volume.

Mesh Size

Choose an option…  1000µ780µ500µ405µ335μ300µ275µ250µ225µ200µ150µ120µ100µ Clear selection

Hydro-Bios No. 438 515 | Vertical Oceanographic Plankton Nets

• Spare Parts
• Accessories

Spare Net Part

Spare Net Part

Mesh Size

Choose an option…  1000µ780µ500µ405µ335μ300µ275µ250µ225µ200µ150µ120µ100µ Clear selection

Hydro-Bios No. 438 517

Messenger-operated closing mechanism

including messenger 800 g and closing rope

Hydro-Bios No. 438 520

Messenger

with 10mm bore, 800g

Hydro-Bios No. 440 003

Spare Vertical Net Bucket

complete with net bucket frame

Mesh Size

Choose an option…  1000µ780µ500µ405µ335μ300µ275µ250µ225µ200µ150µ120µ100µ

Hydro-Bios No. 438 975

TECHNICAL DATA
Material	Net ring and net bucket frame: Stainless steel  Closing mechanism: Powder-coated and nickel-plated brass  Net bag: MOnyl (PA)  Net bucket: PVC
Dimensions	57 cm x 300 cm (dia. x l)
Weight	28 kg
Mouth opening	57 cm dia./0.255 m²
Mesh size	200 microns (or as per choice between 100 and 1500 microns)

ORDERING INFORMATION
Products
438 515	1. Messenger-operated closing mechanism,  including messenger 800 g and closing rope 2. Bridle of Nylon rope with thimble and shackle 3. Net ring of stainless steel with loops for bridle  and bucket ropes, with Nylon webbing and zip fastener. 4. Net Part, consisting of: a) Net part, cylindrical, with zip fastener and loops  for the closing rope, length 95 cm, 200 microns b) Net part, conical, length 165 cm, 200 microns 5. Vertical Net Bucket consisting of: a) Fixing Ring with over centre fasteners b) PVC Net Bucket with side window covered with sieve gauze c) Net Bucket Frame for vertical operation
Accessories
438 115	Mechanical Flow Meter with back-run stop for counting the amount of water passing through the net
Spare parts
438 517	Spare Net Part,  200 microns (or as per choice between 100 and 1000 mircons)
438 520	Messenger-operated closing mechanism, including messenger 800 g and closing rope
440 003	Messenger, with 10mm bore, 800g
438 975	Spare Vertical Net Bucket, complete with net bucket frame,  200 microns (or as per choice between 100 and 1000 microns)