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- Calibration
  
  We are one of the leading calibration laboratories in Europe and accredited for more than 300 calibration procedures according to ISO/IEC 17025:2017.
  Calibration
- Our measured variables
  Our accredited laboratories cover almost all measurands and offer a unique service portfolio.
- On-site Calibration
  We calibrate test equipment and measuring points at our customers' sites with professional competence and high-precision equipment.
- Calibration equipment
  With our portable calibrators for temperature, humidity and pressure, calibrations can be carried out regardless of location.
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  We manage your test equipment with the holistic test equipment management solution PRIMAS for compliance with standards and directives.
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  The internet-based test equipment management system PRIMAS online supports the assurance of test equipment requirements - even while on the road.
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  PRIMAS validated is a validation-enabled test equipment management system for companies with GxP compliance requirements.
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  PRIMAS exchange enables automated data transfer of test equipment data between MES/CAQ systems and our data master.
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  PRIMAS connect is a web service for automated access and queries to PRIMAS online in the Testo Industrial Services data system.
- Qualification
  
  We support qualification projects such as cleanroom qualification or plant qualification. We also qualify warehouses and transport systems according to GDP and GSP standards.
  Qualification
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  Professional support for all GMP measures in the area of cleanroom qualification - from conception to implementation.
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- Validation
  
  We take care of cleaning, process and transport validation as well as computer and software validation to ensure reproducibility and robustness.
  Validation
- Cleaning validation
  Holistic handling of professional cleaning validations as well as support for validation projects and revalidation measures.
- Process validation
  Risk-based process validation to demonstrate the fulfilment of process requirements and outcomes, and to ensure product quality.
- Transport validation
  Transport validation to ensure stable climate conditions during logistics and transport of sensitive goods to the consumer.
- Computer and software validation
  Computer and software validation (CSV) to ensure the reproducibility of procedures and processes of computer-based systems.

Humidity as a measured variable

This technical article outlines the theoretical fundamentals of humidity as a measurand. From the pure calculation of relative and absolute humidity to numerous measurement methods and humidity calibration.

Feuchtekalibrierung am Feuchtekalibrator Huminator

How do I calculate relative and absolute humidity, where does it play a role and how can the topic be defined? For these and many other questions, we have focussed on humidity as a measurable variable for you in full in this technical article.

Contents:

Theoretical basics
Calculation and measurement of humidity
Measurement of relative humidity
Overview of humidity sensors
Possibilities of humidity calibration

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