HYDRO-BIOS: Neuston Net acc. to David/Hempel Model 300

Category: Inlet Sampling Network
Art.No.: 438 210
Keywords: Neuston, Neuston Net acc. to David
Supplier: Qingdao Watertools Technology Co., Ltd.

Introduction:

The Neuston Net acc. to David/Hempel Model 300 has been designed for accurate epineuston and hyponeuston sampling. A current field of application is e.g. microplastic sampling. It consists of a slender catamaran swimmer body of aluminium with relative high draft, caring for a stable position even under choppy conditions at sea. The vertically adjustable double net frame receives the rectangular surface and sub-surface net bags with a standard mesh size of 300 µm (or as per choice between 100 and 500 µm).

For easy retrieval the sample is concentrated inside two removable plastic net buckets with side window (covered with sieve gauze). A bridle with one adjustable leg is used to operate the net from starboard, portside or stern.

Neuston Katamaran for Microplastic

Microplastic Sampling under rough conditions

For sampling at open seas the Neuston Net with a slim aluminium katamaran is recommended. The katamaran is 3 m long which helps to tow it very straight through the water. The fact that the two bodies are very slim and almost completely submerge into the water avoids “jumping” on the waves. It can be operated with greatest stability even under rough conditions. The maximum speed is rated to 4 knots. The net has a relatively large opening of 40 x70 cm.

TECHNICAL DETAILS

Length

300 cm

Width

220 cm

Height

60 cm

Net opening

70 x 40 cm

Standard mesh size

300 µm

Weight on air

100 kg

Material of frame

anodized aluminium

Material of net bag

MOnyl

Towing speed (for 300 microns standard mesh size)

4 kn

Product ID

438 211