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- Calibration
  
  We are one of the leading calibration laboratories in Germany and accredited for more than 300 calibration procedures according to DIN EN ISO/IEC 17025:2018.
  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.
- Test equipment management
  
  We manage your test equipment with the holistic PRIMAS test equipment management solution for compliance with standards and directives.
  Test equipment management
- PRIMAS online & mobile
  The internet-based test equipment management system PRIMAS online supports the assurance of test equipment requirements - even while on the road.
- PRIMAS validated
  PRIMAS validated is a validation-enabled test equipment management system for companies with GxP compliance requirements.
- PRIMAS exchange
  PRIMAS exchange enables automated data transfer of test equipment data between MES/CAQ systems and our data master.
- PRIMAS connect
  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
- Cleanroom
  Professional support for all GMP measures in the area of cleanroom qualification - from conception to implementation.
- Plants & Utilities
  Risk-based qualification of process plants, supply systems and utilities for the sustainable safety of process stability and robustness.
- Transport and storage
  Storage and transport qualification to ensure uniform temperature and climate conditions and maintain product quality.
- 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 Software Validation
  Computer system validation and software validation (CSV) to ensure the reproducibility of procedures and processes of computer-based systems.

Bilateral comparison

Proficiency tests as a bilateral comparison

Testo Industrial Services offers individual proficiency tests as bilateral comparisons according to the current service portfolio of our calibration laboratory.

A bilateral comparison refers to a direct comparison between a pilot laboratory and the inquiring laboratory. The advantage here is the adaptability to the specific needs of the requesting laboratory. In addition, you usually benefit from a faster execution time than with a proficiency test.

General procedure of a bilateral comparison

If you are interested in carrying out a proficiency tests as a bilateral comparison, the procedure is as follows.

Procedure of a bilateral comparison

In the past, bilateral comparisons were carried out by Testo Industrial Services as a pilot laboratory for the following measured variables and objects of comparison:

Electrics: Power meters, multimeters, oscilloscopes, resistors, temperature simulation, frequency, current transformers/current clamps, power supply units, pulse variables
Humidity: relative humidity, climate chamber
Temperature: Resistance thermometer, thermocouples, temperature cabinet, surface
Length measurement technology: Caliper gauge, outside micrometer, inside micrometer, outside rapid probe
Mechanics: Absolute, relative and differential pressure, force
Flowing media: Flow rate liquid, flow, volume flow

Your contact persons

Janina Posdziech

Janina Posdziech

Expert Metrology Calibration Services

+49 7661 90901 8243
JPosdziech@testotis.de

Niklas Jäger

Niklas Jäger

Junior Expert Metrology
Product Manager Proficiency Testing

+49 7661 90901 8471
NJaeger@testotis.de

Contact now

Get in touch with us and we will be happy to send you a non-binding offer for your comparison!

Expertise in calibration, test equipment management, qualification, validation

Expertise

In our Knowledge Centre you will find answers from our experts to numerous questions from our specialist areas.

Knowledge centre proficiency tests and comparison measurements