„The testing chamber, and the staff's approach and willingness beyond requirements — I can only recommend them.“
Tomáš Matús
Google review
Accredited Calibration Laboratory No. 2298
Since 2001 we have been an Accredited Calibration Laboratory No. 2298 under ISO 17025. Alongside our extensive modern equipment, we have ample capacity of trained personnel, so we are always ready to adapt to your needs and carry out the work for you precisely.
Calibration Laboratory Services
We offer accredited and non-accredited calibration across the following areas — in our laboratory or directly at your site.
Accredited calibration
Calibration of Test Chambers
- Temperature & climatic chambers
- Temperature, humidity & airflow
- Drive-in and walk-in chambers
Accredited calibration
Calibration of Thermometers & Hygrometers
- Portable & fixed thermometers
- Humidity sensors (hygrometers)
- Temperature/humidity data loggers
Accredited calibration
Calibration of Vibration Control Units
- Vibration controllers
- Accelerometers & sensors
- Vibration measurement chains
Accredited calibration
Calibration of Hardness Testers
- Vickers, Brinell, Rockwell
- Shore & IRHD hardness
- Reference hardness blocks
Accredited calibration
Calibration of Testing Machines
- Tensile & compression machines
- Force measurement
- Extensometers
Calibration of Optical Instruments
- Microscopes
- Measuring projectors
- Optical measuring systems
Calibration of Rheological Instruments
- Rheometers & viscometers
- Melt-flow instruments
- Flow measurement
Your Partner for Reliable Calibration
Thanks to a high number of measuring units, reference standards and calibration technicians — combined with know-how we have been building since 1999 — we can offer the expertise and flexibility you need.
We carry out equipment calibration directly at the customer's premises. Together with our service department, which usually performs maintenance before the calibration itself, we always strive to adapt to the customer's requirements — whether in terms of speed, recommending the most ideal procedure, or the subsequent processing of calibration certificates.
Our calibration technicians are continuously trained in the latest methods and procedures, ensuring maximum efficiency and the relevance of the calibrations performed.
All of this makes JD Dvořák a reliable partner in the field of temperature and humidity calibration.
We Calibrate Various Types of Equipment
We perform accredited calibration of temperature and humidity in temperature and climatic chambers, corrosion and condensation chambers, drying ovens, freezer boxes and more. We also carry out accredited calibration of temperature and humidity sensors.
But we also calibrate vibration control units for vibration systems and hardness testers for the Vickers, Rockwell, Brinell, Shore and IRHD methods. We can also calibrate microscopes and Nikon measuring instruments and, last but not least, we calibrate testing machines and rheological instruments.
How Does It All Work?
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1
Non-binding inquiry
Tell us your calibration requirements (e.g. via the inquiry form, email or phone).
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2
Consultation & requirements specification
We contact you and clarify the calibration requirements and the timeline.
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3
Price quotation
You receive a structured price quotation from us.
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4
Ordering
After your order we reserve the date and capacity.
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5
Performing the calibration
Our technician carries out the calibration.
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6
Preparing the calibration protocol
We send you the calibration certificate electronically, as standard within 2 working days of the calibration.
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7
Follow-up support
We are available to consult the results with you afterwards.
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8
Regular calibration interval
We contact you in advance before your calibration interval ends.
We'll be happy to advise you.
Karel Petrýdes
Head of the calibration laboratory
Where to Find the Laboratory
JD Dvořák, s.r.o., Toužimská 897/E3, 199 00 Praha 18
- Certified personnel
- Calibration of sensors
- Expert advice
- Trouble-free parking
Words From Our Clients
„JD Dvořák — a company where the impossible does not exist and where it is not only about work. I am glad to have the honour of working with JD Dvořák.“
Libor Pala
TRL Space Systems s.r.o.
„We have worked with JD Dvořák for a long time in testing, the rental of climatic chambers, and the service and calibration of our equipment. We value the helpfulness and professionalism of the department heads and technicians we are in regular contact with during tests and the work carried out. Our technicians also make use of training in various areas of testing, which provides both an expansion of theoretical knowledge and practical demonstrations.“
Jiri Turek
Google review
„What I greatly appreciate is the personal approach to solving every problem. Whether it concerned specific testing requirements or the need for individual consultation, I was always met with willingness and expert help that led to a smooth and efficient collaboration. For me, JD Dvořák is not only a professional company, but also an excellent partner in research and education.“
„We have worked with JD Dvořák since 2020. Since then we have completed several installations together, and throughout they have provided service and the necessary calibrations, always at the highest professional level. They have also helped us with our special requirements and we can always rely on them. Their approach is not only professional and customer-oriented, but also very human, and the cooperation is always pleasant.“
Jan Špaček
Fresenius Kabi Horatev CZ s.r.o.
„Cooperation with JD Dvořák is at an excellent level, as proven by more than 20 years of trouble-free collaboration.“
Libor Šmíd
TÜV SÜD Czech s.r.o.
„You do good work — thank you for the long-term cooperation.“
Ing. Ivan Vavrík
Bel Power Solutions s.r.o.
„Thank you for the professional cooperation so far. You are a very reliable partner for us.“
Ing. Miloslav Mensinger
Škoda Auto a.s.
Frequently Asked Questions
Accredited calibration is performed under ISO 17025 by a laboratory accredited by the national accreditation body (in our case Laboratory No. 2298). It guarantees traceability to national standards, a documented measurement uncertainty and a certificate recognised across the EU.
Yes. Many instruments — including test chambers — can be calibrated directly at your premises, which avoids transport and downtime. We agree the scope and schedule with you in advance.
It depends on the instrument, how it is used and the applicable standards. A typical interval is 12 months, but we will help you set a schedule that matches your requirements and can remind you when calibration is due.
The certificate records the instrument identification, the measured values, the deviations found, the measurement uncertainty, the reference standards used and the date and place of calibration. It can be issued in Czech or English.
We calibrate temperature and climatic test chambers, portable thermometers and hygrometers, sensor measuring units, hardness testers, tensile machines and rheological instruments.
It depends on the type and number of instruments. We give you a realistic schedule together with the price quotation; on-site calibrations are usually completed in a single visit.
Yes. We provide warranty and post-warranty service for our own and competitors' equipment, so any deviation found during calibration can be addressed straight away.
Send us a non-binding inquiry with the equipment you need calibrated and we will prepare a tailored quotation, usually within one working day.
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