• Made in Britain by TEKPRO
• Suitable for animal feed & wood pellets between 3mm and 12mm.
• Fully automatic sample testing, perfect for quality conscious busy mill environments .
• Takes samples directly from the production line during the manufacturing stage.
• Operated by Windows software (provided), or can be paired with mill management software.
• Reproducible accuracy of  ± 0.1%
• Helps to eliminate waste, maintain quality, and reduce cost.
• Fast-growing user base worldwide.
• 3PH 400V, Earth and Neutral model only

The Holmen NHP300 Pellet Durability Tester is ideally suited to a busy, quality focused mill.

Samples are automatically taken from the production line, the machine tests the pellets by agitating them with air at a fixed 70mBar pressure, returns them to the line, and a PDI result is provided to the NHP300 control software, or to your current mill management software without manual input from the mill operator during the test phase.

Taking a sample from the process line enables changes to be made at a point that will maximise production, reduce cost, minimise waste and maintain pellet quality.

In addition to calculating the PDI, the amount of ‘dust’ (Fines) can be also be calculated.
Up to four pellet lines can be tested by one NHP300 with the option to return samples back to their original lines too.

“AMBAR is the largest feed mill in the State of Israel and we chose after checking with different suppliers, to work with TEKPRO company, and to buy from them 6 systems of HOLMEN type NHP300. We use them for checking in process for checking Pellet quality On line. This gives us instant results for process control which can be adjusted during production. Which is why we decided to purchase an additional system.”

Avionosm Vizan, Technical Manager, AMBAR, Israel

• Made in Britain by TEKPRO
• Suitable for Animal Feed & Wood Pellets between 3mm and 12mm
• Semi-Automatic – less need for human input
• Quicker than alternative methods
• Ideal for laboratories & busy testing environments
• Reproducible accuracy of  ± 0.1%
• PDI results are stored and displayed on Colour LCD touch-screen, and can be printed or sent to other software by Ethernet socket
• Daily test results can be sent by email to staff, even if working remotely
• Digital Self Calibration built in
• Now includes dedicated Fines Calculation feature
• 1PH 110V-115V or 1PH 220V-240V 

The Holmen NHP200 Series 2, is our flagship pellet durability tester used worldwide for calculating the Pellet Durability Index (PDI) of feed and wood pellets by simulating the pellet transportation environment from mill to trough.

Once a sample of pellets is loaded into the machine it removes any fines, weighs the sample, tests the pellets by agitating them with air at a fixed 70mBar pressure, weighs the remaining sample and calculates the PDI.

This automatic solution removes the chance of human error, providing an accurate and reliable test method. The reduction in human input also allows other tasks to be completed while a test is done, ideal in a busy laboratory or where a wide number of staff carry out the testing.

The average test lasts only 4 minutes and the test time is automatically set according to the pellet diameter entered. Suitable for pellets 3mm-12mm diameter.

• Made in Britain by TEKPRO
• Suitable for Animal Feed Pellets 
• Portable
• Fast and Simple Operation
• Results are obtainable 4 times faster than the Kansas State Tumbling Can
• Adjustable Test Time
• Fines Removed During Test
• Different mesh hopper sizes available between 1.25mm and 4.0mm
• 1PH 110V-115V or 1PH 220V-240V 

The Holmen NHP100 is our entry level Pellet Durability Tester which is designed to be easily transported around different testing locations.

The NHP100 operates by loading a manually weighed sample of pellets into the test chamber, which cascades them in an air stream at 70mBar, causing the pellets to collide with each other and the perforated hard surfaces of the test chamber.

After the test cycle the pellets are manually removed and weighed to obtain a ‘Pellet Durability Index’ (PDI) reading.

• Made in Britain by TEKPRO
• Suitable for wood pellets
• Portable
• Fast and simple operation
• Simulates pellets transportation environment from mill to boiler
• Provides the ability to calculate Mechanical Durability and Fine Material Amount

The Ligno-Tester is aimed specifically for wood pellet producers wishing to quickly cross-reference their test results against the ISO17831-1:2015 standard.

Once a sample is manually weighed and loaded into the tester, the Fine Material Amount (F) cycles lasts 30 seconds and Mechanical Durability (DU) test cycle lasts 60 seconds. Fines and dust are removed during the DU test cycle, resulting in no further sieving being required.

Fitted with 3.15mm diameter Perforated Hopper.

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Article: – Pellet quality in a compound feed factory – Thoughts from Feed Design Lab

TEKPRO are pleased to be the industry leading durability test machine provider to Feed Design Lab, with the recent supply of our benchmark setting, advanced Holmen NHP200 Series 2 tester. Feed Design Lab are the Dutch based research & education center for innovation and sustainability to the feed industry. Feed and technology companies internationally cooperate in an open innovation network to reach a sustainable animal production chain. In order to reach this goal, their pilot plant was established in which research into new raw materials takes place, where new healthy feed can be developed, where new production techniques can be tested, and where education and training activities can take place.