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Data Sheet Application Notes

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Multi (Multiple) Corers



The OSIL range of Multi (Multiple) Corers combine the flexibility of four models (12 core Mega, 8 core Maxi, 4 core Midi & the smaller framed 4 core Mini Corer) with a suite of features for undisturbed sediment sampling. The Corers offer the ability to collect multiple high-quality undisturbed sediment samples which include the sediment /water interface and overlying supernatant water. This is achieved through the use of a unique hydrostatic damping system. This system slows the penetration rate down to approximately 1cm/s, and removes the typical bow wave seen with other corers.

 

Each of the four models, Mega, Maxi, Midi and Mini, are easy to operate, and provide a simple and reliable way of collecting the most accurate sample possible. In addition these corers benefit from detachable core holders, enabling the core tubes or, in certain instances the whole corer tube assembly, to be removed from the main body of the corer enabling a succession of samples to be taken during any one mission. The core tubes are sealed top and bottom, allowing rapid retrieval of the corer without jeopardizing the integrity of the samples.

The rugged frame of the corer is made of 316 stainless steel and the core tubing itself can be manufactured from acrylic, poly carbonate or stainless steel, depending on the requirements of the customer.  With a deployment rate of approximately 1 metre per second on the descent coupled with a retrieval rate at winch speed the corers are ideal for rapid assessment work.

 

Applications 

Environmental Impact Assessments 

Geochemical analysis 

Interstitial waters 

Oil field cuttings piles 

Biological survey 

 

Features 

Virtually undisturbed sampling of the sediment/water interface 

Unique hydrostatic sealing mechanism 

Detachable core holders 

Simple deployment and operation 

Hydraulically damped sampling 

Rugged construction 

 

Technical Specifications

 

 

Mega Corer 

Maxi Corer

Midi Corer 

Mini Corer 

Core Tubes

12

8

4

4

Outer Diameter (mm)

110 or 65

110 or 65

110 or 65

65

Internal Diameter (mm)

 100 or 59

100 or 59

100 or 59

59 

Length (mm)

600

600

600

300

Max. Core Length (mm)

400

400

400

150

Corer Weight (kg)

735 

700

665 

88 



For further information on OSIL's range of Sediment Corers please read our Sediment Sampling Brochure.

 

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