Our way for drying

is special.
More fast. More reliable. More gentle. More safe.

More Innovation for your Product

Pharmaceuticals and medical devices, packed or non-packed, are highly sensitive goods requiring very careful and, particularly, stress-free processing and production. Top quality drying spells higher quality and reliability.

Heat pump based condensation drying is the solution to your drying challenge.

If you want to know why our way of drying is good for you or your customer, how it works and which drying systems we build you may find elucidating information on the pages below.

Its alternative physical approach combines seemingly conflicting features such as low temperatures, short drying times and best results.

Our drying solutions are also suitable for the controlled drying of medical cannabis – efficient, safe, GMP ready. For high quality Results and constant Processes.
Read More

Your Benefits

Low temperature for gentle processing

Your product is sensitive and require very gentle processing. In terms of drying, this is achieved by highly efficient dehumidification at low temperatures between 20 °C und 90 °C as required for the specific application. This absolutely stress-free low temperature drying prevents undesired heating of the materials and products.

High process reliability

Drying with Airgenex®med in the closed system ensures constant parameters, such as temperature, time, humidity, air speed and airflow rate, and makes your process independent of ambient environmental conditions. The drying system operates reliably, stabilises your production flow and, as a result, optimises your process. Airgenex®med is the answer to any quality issue in the drying process.

Independent Technology

Airgenex®med drying does not entail any interchange with ambient air. The system is emission-free and does not impair clean-room and production environments. Also, Airgenex®med drying systems are independent of the plant infrastructure.

High Efficiency

The use of heat pump technology for air dehumidification makes Airgenex®med highly efficient. Top quality drying results at short times are achieved by a perfect combination of air conditioning and air routeing fine-tuned to suit the requirements of the specific product.

Trial Drying for Best Results

Our services offered include series of tests in our pilot plant station. In these tests, we learn about your process and your product and merge our core and professional competencies with your experience. Do you want to learn more about our pilot plant station?

Cooling systems and combined drying-cooling systems

With minor modification, our Airgenex®med system may also be used for cooling if desired or required by your process. We have already realised many combined drying-cooling systems. We also offer to devise energy-efficient concepts for reuse of waste energy from the cooling process in other processes of your company.

Qualification and Validation

Our GMP service is available either as a complete package or as an individual service:

_ Preparation of specific design documents for the system including its controls:
· Design specification
· Functional specification
· Hardware design specification
· Software design specification

_ Qualification Process:
· Design qualification
· Installation qualification
· Functional qualification
· FAT and SAT plus documentation

Drying Systems

for pharmaceutical and medical Applications

We develop, design and manufacture drying systems both for batch and continuous operation. We modify our technology to meet your specifications. All drying related parameters for your specific application are determined by prior tests in our test center.

For drying to be successful, a perfect match of air dehumidification and air routeing is required. Extremely dry, unsaturated air, at low temperatures, is routed exactly to the place where humidity is to be absorbed. This process – our heat pump based condensation drying – is applied in various types of system designs.

Hygienic Design und GMP/GAMP
Our drying systems are made from stainless steel and fulfil hygienic design cleaning requirements. We shall be pleased to meet your specific GMP requirements – as a complete package or as an individual service. Just tell us what you need!

Ihr Anwendungsfall ist anders? Sicherlich haben Sie dafür Verständnis, dass es den Rahmen sprengen würde all unsere Trocknungsmöglichkeiten aufzulisten. Sollten Sie sich mit Ihrer Anwendung hier nicht wiedergefunden haben, dann kontaktieren Sie uns bitte direkt. Wir beraten Sie gerne und unverbindlich!

Your Application is different?

Unfortunately, we cannot describe any potential drying solution here. Contact us, without obligation. We shall be pleased to discuss with you what we can do for your specific drying application. And this is quite a lot!


With our energy-saving drying systems, you can gently dry many products in the pharmaceutical / medical technology sector – from the active ingredient itself to carrier materials / containers. Do you have a product other than the following examples? We are an innovative team and look forward to new tasks. Have your product tested in our technical centre without obligation. Contact us – we will be happy to advise you without obligation!

Bags and Bottles for Infusion and Injection Therapy

Your products are hot and wet after processes such as hot water sterilisation. Your polypropylene bags or glass bottles can be gently dried by our low temperature system, and cooled subsequently if desired. Our drying or drying-cooling solutions are flexible and may thus be used for any continuous or batch processes – in manual or fully automatic operation. The normal drying temperature is between 40 °C and 75 °C.

Grasses, Herbs and much more

Our gentle low temperature drying method can be much helpful in manufacturing or processing your products. Applications are multifarious and highly specific. Much so are our drying solutions. Learn more about food drying here.

Ampoules and Vials

Our dryers may be used no matter if your products are made from glass, plastic or other materials. Drying is always effected at low temperatures. No matter how many ampoules or vials are placed in whatever receptacle – our solution will always ensure reliable and full drying.

Viscous Materials / Semi-fluids / Semi-solid Pastes

A continuous (belt) drying process is recommended for such drying applications. Our low temperature method is capable of drying these substances gently, at temperatures between 40 °C and 75 °C, to the desired degree of dryness. The use of dry air combined with customised air routeing ensures uniform and exact drying results.

Schonende Trocknung von Schalenfrüchten | HARTER drying solutions
Containers, Baskets and Trays

Nach dem Reinigen, Waschen oder Sterilisieren – immer geht es darum absolut trockene Waren zu generieren, um sie für eine sofortige Weiterverarbeitung vorzubereiten. Für besonders anspruchsvolle Anwendungen, wie es bei Behältnissen oft der Fall ist, kombinieren wir unsere Trocknung mit einer vorgeschalteten druckluftfreien Abblaseinrichtung. Unser Trocknungssystem ist in jeder Hinsicht flexibel und in jede vorhandene oder geplante Prozessart integrierbar.

Items having undergone cleaning, rinsing or sterilising invariably require perfect drying for subsequent processing. For particularly challenging applications, such as where containers are involved, we combine drying with upstream non-compressed air blowing. Our drying system is flexible and may be integrated in any existing or planned process.

Lozenges and Tablets

Drying is also an important step in the production of pastilles and pills, contributing to the quality of your products. On top of the benefits mentioned above, our drying method provides another bonus: Valuable ingredients and important flavours are preserved because drying takes place in a closed circuit. Also, this closed system makes drying independent of the climate and other external impacts.

Blister Packages

Drying drug blisters essentially requires superficial water to be completely removed while retaining the integrity of the contents. Learn more about packaging drying solutions here.

Implants and Biomaterials / Diagnostic and Surgical Instruments

Implants and instruments have special surface finishes applied which require subsequent stain-free, reliable and complete drying. Sadly, hot air blowers are frequently used for this purpose although they fail to produce the desired results. Our low temperature, dry air dryers offer the perfect alternative. Learn more about drying surface finished products here.

The Process

The success of our drying is based on a nifty combination of air conditioning and air routeing. We provide the best dyring results to you by directing extremely dry air exactly to or over the products to be dried.

Click at the numbers inside the graphic to get further information.

Where Drying becomes a Special Event

Our Test Center – where Ideas are forged

Our test center is unique.

A room full of technical equipment and opportunities.
A place full of ingenuity and innovation.
Engineering spirit meets creativity.
Clients with faces in wonder.

Please, come in!

Tests provide valuable Information and Confidence

Series of tests run in our test center provide valuable information and confidence. We test your product for response to temperature, time, humidity, air speed and airflow rate. We also look at the routeing of the air inside the dryer because this is a critical factor on the way to success. To do all this, we have several multifunctional dryers which our engineer adapts to the specific application. Our service to you includes, of course, an evaluation and interpretation of, and a comprehensive report on the results of these tests.

Sometimes, the parameters for a successful solution are clear at hand after just one series of tests. Every now and then, several runs with varying configurations are required. This is the moment when it takes the knowledge and creativity of our engineer to find a good solution. And we always find one.

We have run thousands of drying tests in our test center in more than 30 years. The experience gathered and the know-how obtained therefrom may not be valued high enough. And it is for your benefit.

A Day filled with more than just Engineering Matters

You are welcome to witness our tests. See with your very eyes how powerful our condensation drying is and how we create viable solutions. We will give you an insight into drying issues. It is equally important that your product and process expertise is duly reflected so that the joint project may be successful. We also cultivate hospitality and good company. So, your stay will be both pleasant and informative.

Our Special Service

It may appear reasonable to run drying tests at your premises using a system provided on loan. In such case, one of our qualified engineers will instruct you on how to run your own tests. We also build larger scale test set-ups as agreed.

You are a Manufacturer and want a better Dryer?

You already have a product and a process and wish to optimise your drying process? Maybe the energy consumption of your existing dryer is too high? Or you want to raise your throughput? A shorter drying time would be helpful? Or you just want to know the impact of our low temperatures on the ingredients, haptics and appearance of your product?

Our test center will provide answers to your questions. You tell us the ideal conditions under which your product should get dry. We have a wealth of experience with solvent-based agents and with packaged products. As an outcome of our tests, we will furnish a solution in conformance with hygienic design and GMP/GAMP requirements. The results are very often much better than expected by our customers. We can routinely stun our customers in terms of time & temperature.

You have a new Product Idea?

You are planning to introduce an entirely new product and do not know exactly how to do the drying?

Whatever the challenge to be met we will be glad to deal with it. It is our passion to find the best drying solutions. When running tests, our engineer quickly sees which parameters are best suited to ensure successful drying. If products are particularly demanding there is always an engineering trick to help us arrive at a solution.

You are a Research Enterprise or a University?

We have repeatedly taken on the drying part in several research projects that included the defined dehumidification of a product. Universities have used our loan systems to run their own series of tests for various research purposes. Extensive mutual exchange is conducive to the advancement of both parties‘ endeavours.

Managing Owner

Our pilot plant station provides visible evidence of what our technology can do for you. This is the only way to arrive at a trustworthy and reliable solution.

Reinhold Specht
Managing Owner

What can we do for you?


You are welcome to contact us without obligation.

+49 (0) 83 83 / 92 23 11 | info@harter-gmbh.de


Our friendly staff will be happy to assist you.
Monday to Thursday from 8 a.m. to 12 p.m. and 1 p.m. to 4.30 p.m.
Friday from 8 a.m. to 2 p.m.

+49 (0) 83 83 / 92 23 20   |   ass@harter-gmbh.de


These Companies

trust in us

We have successfully installed more than 2,000 drying systems to date. Here is a small selection of references.

AI Fame
AI Lab
Bolder Pastilles
B Braun
Carl Zeiss Vision
i3 Membrane
IDT Biologika
SBM Schoeller Bleckmann Medizintechnik
Takeda Pharma
Viscofan Bio Engineering