Colour Sorting / Optical Sorting

McArthur Agriculture

Grain sorting is a vital tool for enhanced product quality, where traditional methods of physical grain sorting cannot give the required speed and accuracy for modern production. McArthur Agriculture is proudly a UK distributor for Satake Europe, a technology leader in optical grain sorting systems for seed, grain, food and plastic applications.


We offer a wide range of colour grain sorting machinery that uses precise colour and shape recognition technology to increase product quality, meet safety requirements and customer needs, increase yield and profits whilst reducing waste. Satake optical sorting machinery all feature benefits such as multilingual easy to use touch screens, recalibration without product interruption, low maintenance, vibratory feeders and much more. A tailored approach means that we can offer the best solution for your business’ optical grain sorting requirements without any compromise.


Installation of Satake REZX 4500

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Satake REZX 4500 in Operation

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Satake AlphaScan II Installation

Why Grain Cooling Is Important

Once grain is dry temperatures must be reduced as quickly as possible to avoid spoilage. The main causes of spoilage in stored grain are fungi, insects and mites. Temperatures above 15°C increase the risk of insect and mite populations developing.The HGCA Grain storage guide advises grain cooling should commence as soon as the grain comes into store.

GRANIFRIGOR™ grain cooling units can cool crop to below 12°C in a matter of days independently of weather conditions.

Complete Control

The GRANIFRIGOR™ grain cooling units refrigeration and dehumidification technology ensure that grain stored in a silo or on a ventilated floor can be cooled to below 12°C regardless of weather conditions.

Eliminate Risk

Prompt cooling protects against development of insects, microbes and fungi. Once the crop is cool it remains cool ensuring long term storage without quality losses.

Cost Effective

When a GRANIFRIGOR™ grain cooling unit is used no costly expenditure on fumigation or other chemical treatments is required, drying costs are reduced and respiratory.

For an in-depth examination of the science and economics download the brochure here Download

Do You Meet HGCA Cooling Guidelines?

Grain Cooling Targets

Within 2 weeks Cool to below 15°C To prevent saw-toothed grain beetles completing their life cycle
Within 3-4 months Cool to below 12°C To prevent grain weevils completing their life cycle
By end-December Cool to below 5°C (except malting barley) To kill surviving insects and prevent mites increasing

Download the full HGCA Grain storage guide for cereals and oilseeds here Download


The GRANIFRIGOR™ grain cooling units are manufactured in Germany by refrigeration specialists FrigorTec. They have been manufactured since 1963. Years of research and development into the equipment and its application has made FrigorTec an authority on long-term risk free crop storage across the world.

For specification and details of the GRANIFRIGOR™ range of grain cooling units download the brochure here Download

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More Information

Contact us today for more information on how McArthur Agriculture can help you with your colour/optical sorting requirements. Our expert team is on hand to answer any questions.