Calibration and validation in laboratories for high quality measurements and analysis processes

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Peter-Arie Griffioen


+31 15 202 5740 peter-arie.griffioen@kalibra.nl

Calibration & validation in laboratories is important. Controlled process conditions determine the quality and reliability of measurements and analyzes in the laboratory.

Calibration of measuring instruments guarantees the correctness of the measurements. The validation of processes such as the preparation, processing and storage of products guarantees the conditions of a safe or clean work environment.

Calibration of measuring instruments

We carry out our work on site, as much as possible in the usage situation. We calibrate, among other things:

  • Weighing instruments for accurate product weighing
  • Hygrometers for measuring humidity in a climate cabinet
  • Frequency meters at stirrers
  • Pressure gauges during process preparation
  • Flow meters when supplying liquids in a product
  • Thermometers in freezers; refrigerators, stoves, or ovens.

Validation of rooms for management of environmental conditions

In laboratories, Kalibra provides validation of rooms with controlled environmental conditions, such as the validation of cleanrooms or air-conditioned rooms. The activities are carried out on site; if possible in the usage situation. Examples of spaces to be validated include:

  • Clean rooms for ensuring a clean working environment
  • LAF cabinets, fume cupboards, and microbiological safety benches
  • CO2 incubators
  • Freezers, refrigerators, stoves, or ovens

Why you should choose Kalibra

  • Specific quality requirements often apply to the performance of work in a laboratory. These requirements are laid down in GMP standards or the ISO 17025 standard. We have an ISO 17025 accredited quality system for the calibration of measuring instruments as well as for the validation of rooms. Therefore we are a qualified supplier for ISO 17025 accredited laboratories.
  • In addition, our employees are qualified to work in GMP environments.
  • Several activities can be combined in succession, so that the number of suppliers remains limited for the various activities.
  • We do not supply equipment. This ensures objectivity in the measurements and services.

Would you like to receive more information about calibration or validation in a laboratory? Feel free to contact us.

Clients we are proud of:

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Calibration and validation consultancy for laboratoria

We can also provide you with consultancy services, such as the management of measuring instruments, or with questions about the application of measuring instruments and required accuracy and/or tolerances. All this, of course, entirely in line with the requirements of the quality assurance systems, such as ISO 17025, which are operational in laboratories. Contact us for more information.


Kalibra specialises in calibrations and validations. In addition, we also perform (metrological) inspections. Our services at a glance:


Calibration is the comparison of a measured value using a measuring system with an actually measured value with a standard to determine the deviation.


Validation of critical facilities, spaces, instruments, and equipment provides insight into whether requirements are met, and therefore whether an object is suitable for the intended goal.


Metrological inspection involves testing whether a measuring instrument complies with metrological legislation. Kalibra is a formal inspection body. We carry out inspections as an independent institution. A metrological inspection guarantees objectivity and expertise.

Calibration of Measuring Instruments

Kalibra is an expert in the field of different types of calibrations. We can calibrate both individual measuring equipment as well as permanently installed measuring equipment in the production process.


Trained and experienced Kalibra employees are available on call for a either a short or longer period. Even a couple of days a year is possible.


When it comes to calibrations and validations, our consultancy services can always provide you with advice and guidance. After all, before any inspections are performed, it is important that the starting points and test criteria are well defined.

Gas detection

Kalibra is an authorized sales and service point of mercury vapor meters from Arizona Instruments (AZI). You can also contact us for the rental and purchase of mercury vapor meters.

Maintenance and Management

It should go without saying that your systems should work exactly as intended. Your employees must be able to safely operate their equipment.