HYDROBIOS Bongo Net Oceanographic double-ring net for horizontal or oblique tows

Bongo Net

Oceanographic double-ring net for horizontal or oblique tows

ABOUT

The double-ring construction not only avoids disturbances usually caused by the towing bridles fixed in front of the mouth opening of non-opening/non-closing plankton nets but it allows the investigator to work with two different mesh sizes at a time. Two 60 cm diameter stainless steel rings, connected by a coupling with rotatable connection point for the towing rope, are equipped with two 2.5 meter long net bags. The Bongo Net should be operated in conjunction with a 22 kg V-Fin depressor to create negative lift at the instrument. For easy retrieval the samples are concentrated inside removable plastic net buckets with side window (covered with sieve gauze). Use the Bongo Net in conjunction with two Mechanical Flow Meters to measure the filtered water volume.

Mesh Size Net Bag 1	Choose an option…  1000µ100µ120µ150µ1550µ200µ225µ250µ275µ300µ335µ405µ500µ780µ
Mesh Size Net Bag 2	Choose an option…  1000µ100µ120µ150µ200µ225µ250µ275µ300µ335µ405µ500µ780µ Clear selection

Hydro-Bios No. 438 750 | Horizontal Oceanographic Plankton Nets

Spare Parts & Accessories

• Spare Parts
• Accessories

Spare Net Part

Spare Net Part (one single net),
500 microns (or as per choice between 100 and 1000 microns)

Mesh Size

Choose an option…  1000µ780µ500µ405µ335μ300µ275µ250µ225µ200µ150µ120µ100µ Clear selection

Hydro-Bios No. 438 752

Spare Plastic Net Bucket

Spare Plastic Net Bucket, consisting of:
a) Fixing Ring with over centre fasteners
for attaching to the end of a net
b) PVC-Net Bucket with side window,
covered with sieve gauze

Mesh Size

Choose an option…  1000µ780µ500µ405µ335μ300µ275µ250µ225µ200µ150µ120µ100µ

Hydro-Bios No. 438 150 - sparepart

TECHNICAL DATA
Material	Net rings and coupling: Stainless steel Net bag: MOnyl (PA) Net bucket: PVC
Dimensions	250 cm x 135 cm x 60 cm  (l x w x h)
Weight	20 kg
Mouth opening	2 x 60 cm dia./2 x 0.2827m²
Mesh size	500 microns (or select mesh size for each bag independently between 100 and 1000 mircons)

ORDERING INFORMATION
Products
438 750	1. Double Net ring of stainless steel,  with Nylon webbings and zip fasteners  2. Two Net Parts (one per ring) with zip fastener,  conical, upper diameter 60 cm, lower diameter 11 cm,  length 250 cm, 500 micron (or as per choice between  100 and 1000 microns) 3. Two Plastic Net Buckets, each consisting of: a) Fixing Ring with over centre fasteners for attaching to the end of a net b) PVC-Net Bucket with side window, covered with sieve gauze 4. Distance Rod for Plastic Net Buckets
Accessories
438 416	V-Fin Depressor with steel rope and shackle, weight 22 kg
438 110	Mechanical Flow Meter for counting the  amount of water passing through the net
438 753	Net Part for Bongo Net (one single net) with bolt rope for Soft Net Bucket 500 microns (or as per choice between 100 and 1000 microns)
438 935	Mounting ring for Soft Net Bucket
438 930	Soft Net Bucket with bolt rope 500 microns (or as per choice between 100 and 1000 microns)
Spare Parts
438 752	Spare Net Part (one single net), 500 microns (or as per choice between 100 and 1000 microns)
438 150	Spare Plastic Net Bucket, consisting of: a) Fixing Ring with over centre fasteners  for attaching to the end of a net b) PVC-Net Bucket with side window,  covered with sieve gauze