Representative samples and more knowledge with our IQ solutions

Our Principles


Smartest solution

Solution is key, not the product


Less usage

Better for the environment

Great value

Quality always comes first


Fast delivery

By reliable partners

Free advice for your application

100% aseptic sampling

Avoid contamination

Sterile samples are only possible when important factors come together: the right cleaning, the right product for the application and a well-designed procedure. We advise on location and design tailor-made solutions.

Continuous training and knowledge sharing

A sample is only as good as the operator or lab technician who takes it. That is why we actively contribute to knowledge sharing through regular workshops at your location. More than 30 years of experience and practical examples have been incorporated.

years of experience




Sterile and representative sampling of food products in tanks and tubes.

Lumpy products

Meat, spinach or other products with a high viscosity.

Proportional samples

Fully automatic sampling using metered quantities.

Solutions with IQ

CIP or SIP cleanable

Sampling valves cleaned with steam or alcohol provide reliable samples. That’s why we always recommend taps with 2 outlets, so that cleaning is guaranteed. Portable optionally.

Indestructible membranes

The weak point – even with proper maintenance – is the membrane. We developed a PTFE membrane that is guaranteed to open and close at least 1,000,000 times!

Designed smarter

Dead spaces are completely eliminated, taps are manufactured in accordance with EHEDG, FDA, 3A and TA Luft and provided with great surface finishes.

Applied at

Ask for advice

We are ContratEch

We have been solving cleaning problems for customers in the food industry for over 30 years. It is characteristic that we visit the location free of charge and provide advice. We also train your staff on location. Not the product, but the best solution always comes first. Guaranteed to work 100%

Contact details

AHG Fokkerstraat 18b

9403 AP Assen
The Netherlands

+31 (0) 592 27 22 39