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The OSIL range of Multi (Multiple) Corers combine the flexibility of four models (12 core Mega Corer, 8 core Maxi Corer, 4 core Midi Corer & 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


  • Core Tubes - 12
  • Outer Diameter (mm) - 110 or 65
  • Internal Diameter (mm) - 100 or 59
  • Length (mm) - 600 or 800
  • Maximum Core Length (mm) - 400 or 600
  • Corer Weight (kg) - 735 or 750

Technical Specifications - Maxi Corer


  • Core Tubes - 8
  • Outer Diameter (mm) - 110 or 65
  • Internal Diameter (mm) - 100 or 59
  • Length (mm) - 600 or 800
  • Maximum Core Length (mm) - 400 or 600
  • Corer Weight (kg) - 700 or 715

Technical Specifications - Midi Corer


  • Core Tubes - 4
  • Outer Diameter (mm) - 110 or 65
  • Internal Diameter (mm) - 100 or 59
  • Length (mm) - 600 or 800
  • Maximum Core Length (mm) - 400 or 600
  • Corer Weight (kg) - 665 or 680

Technical Specifications - Mini Corer


  • Core Tubes - 4
  • Outer Diameter (mm) - 65
  • Internal Diameter (mm) - 59
  • Length (mm) - 300
  • Maximum Core Length (mm) - 150
  • Corer Weight (kg) - 88

Data Sheets


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