limnological sampling equipment hydrobiological sampling apparatus oceanographic monitoring instruments
Duncan and Associates design, manufacture and supply sensors, probe assemblies, profiling systems
benthic grab sampler grab samplers, corers, nets, bottles, corers   Grange-over-Sands, Cumbria, UK

Supporting the global research community from Cumbria, UK


fluvial, lacustrine, benthic, and marine hydrobiology


DUNCAN AND ASSOCIATES can offer the marine cage fish farming and mariculture industries a wide range of quantitative and qualitative environmental sampling equipment.

The equipment for obtaining water samples, benthic sediment samples and plankton samples is designed to support both the aquaculture and mariculture industry in complying with sampling protocols now demanded internationally by many government agencies and regulatory authorities.

DUNCAN AND ASSOCIATES can offer the marine cage fish farming and mariculture industries a wide range of quantitative and qualitative environmental sampling equipment.

Some of the items we can supply to assist with your sampling requirements are as follows. Our complete range of sampling equipment can be viewed on our main website.

Water Samplers | Benthic Samplers | Plankton Samplers

Water Samplers

Van Dorn Water Sampler
Van Dorn Water Sampler

The Van Dorn Water Sampler, available as either horizontal or vertical models in capacities of 1L, 2L and 3L. They are available with either transparent or non transparent bodies. The devices are messenger operated.

The Marpet Water Sampler has a capacity of 500ml. The bottle holding the water sample can be removed from the sampler body once the sample has been obtained, and replaced with another bottle. This alleviates the necessity to decant the sample immediately after it is taken. This means that the design is ideal for obtaining multiple samples. The device is messenger operated.

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Benthic Samplers

Van Veen Grab Samplers manufactured in 316 stainless steel. Sampling areas available of 0.025mē, 0.045mē or 0.1mē (other sizes available on request).

Van Veen Grab Sampler
0.045m² Van Veen Grab Sampler
with Flaps
Available with:

- Solid tops to the buckets
- Hinged flap lids to provide access to tops of buckets
- Hinged flap lids with gauze net covers to provide access to tops of buckets

Access lids enable sub-samplers to be taken or probes to be inserted into the sediment before the sample is removed from the grab.

All models are available with additional removable lead ballast weights.

The grab comes complete with bridle.

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Plankton Samplers

Plankton Net
Plankton Net

We can provide a wide range of Plankton Nets with hoop diameters of 200, 300, 400 and 500mm. The nets can be either towed vertically or hauled horizontally. They are supplied with a removable collection bottle in the base of the net, capacity 250ml, and ware supplied with a bridle. Mesh sizes are available from 10 to 1000 microns

In addition to these items we also have Winches, Counting Devices, Secchi Discs and Current Meters, which are frequently used for environmental monitoring of fish farm sites, for details on these and the other wide range of equipment manufactured by Duncan & Associates we would refer you to our main website.

For sales and technical support please contact us on: info@duncanandassociates.co.uk

Duncan & Associates
Jeeves Bank, Fernleigh Road, Grange-over-Sands, Cumbria, LA11 7HT, UK
Tel: +44 (0) 15395 33857   Fax: +44 (0) 15395 34963
Email: info@duncanandassociates.co.uk

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