Optimal storage of vaccines and reliable cold chains

More than 150 companies and institutes worldwide are conducting research on the development of new COVID-19 vaccines. And more and more are reporting promising results. A crucial factor in protecting the efficacy of vaccines during production, storage and transportation is the monitoring of defined temperature limits – ranging from 2 to 8°C to extreme lows of -80°C, depending on the vaccine. Testo offers the appropriate measuring technology to ensure that vaccines are not impaired by temperature fluctuations:

  • Solutions for environmental and temperature monitoring from production through to administering the vaccine 
  • Products and solutions from USB loggers to fully integrated monitoring systems 
  • Tailor-made services and personal advice from our experts.

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More reliability in temperature monitoring of vaccines

Environmental and temperature monitoring in refrigerators and freezers


If vaccines are exposed to the wrong climatic conditions, their stability and efficacy can suffer – with fatal consequences. It is therefore essential that all major climatic parameters are monitored to ensure the high quality standards are met. A key factor in this is maintaining and documenting defined constant temperatures for the sensitive vaccines as well as ensuring there is an uninterrupted cold chain throughout the entire product cycle:

  • Clearly defined climatic parameters and temperature limits must be maintained in all stages of production.
  • It is imperative that there are no fluctuations in temperature and climatic conditions during storage and transportation and that this can be verified. 
  • Be it a vaccination centre, nursing home or doctor's surgery, where vaccination is concerned, it is essential that the vaccine is fully monitored to ensure its proper storage and refrigeration before being administered to people.

Measuring solutions from Testo will enable you to ensure both the quality of vaccines and stable climatic parameters.

testo Saveris for
life science applications

testo Saveris Life Science
  • Comprehensive solution - Maximum data security provided by redundant triple storage of measurement data and audit trail
  • Data storage on local server (on premises)
  • Individually configurable access concept and detailed alarm management 
  • Automated and continuous measurement data recording 
  • Can be validated
  • Conformity with FDA 21 CFR Part 11
  • Great scalability: Coverage of numerous measuring points across locations 
  • Extensive sensor portfolio for measuring ranges from -85 °C to +1,000 °C

testo Saveris 2

testo Saveris 2
  • WLAN data logger - Double storage of measurement data 
  • Storage in the Testo Cloud enables location-independent data access 
  • Alarm function for violation of limit values (by e-mail or SMS) 
  • Automated readout 
  • Cannot be validated 
  • Non-conformity with FDA 21 CFR Part 11 
  • Suitable for large projects 
  • Various models: e.g. testo Saveris 2 T3 with K type probe (-195 to +1,350 °C) or available as an attractively priced refrigerator set (-50 to +150 °C)

testo 176 T2

testo 176 T2
  • USB data logger
  • Local storage on the PC (after logger readout)
  • Visual alarm
  • Can be read out via USB or SD card
  • Can be validated
  • Conformity with FDA 21 CFR Part 11 by using ComSoft CFR software (available as optional extra)
  • Suitable for smaller application
  • High-precision measurements with the Pt100 probe for accuracy to 0.02 °C (±0.2 °C at -100 to +200°C/±0.3 °C at +200.1 to +400 °C)
  • Up to 2,000,000 readings can be saved
  • Battery life up to 8 years

testo 175 H1

testo 175 H1
  • USB data logger
  • Local storage on the PC (after logger readout) - Visual alarm
  • Can be read out via USB or SD car
  • Can be validated
  • Conformity with FDA 21 CFR Part 11 by using ComSoft CFR software (available as optional extra)
  • Suitable for smaller applications
  • Precision temperature and humidity measurement (-20 to +55 °C) and calculation of dew point
  • Up to 1,000,000 readings can be saved
  • Battery life up to 3 years

Temperature monitoring during transportation of vaccines


Different vaccines place different demands on transportation conditions. Particularly sensitive vaccines actually require continuous refrigeration at temperatures as low as -80°C. Even small violations of the temperature limits can be detrimental to vaccines. GxP-compliant quality management therefore defines monitoring of the entire cold chain – from production of vaccines to administering them to people in clinics, doctor's surgeries or specially equipped COVID-19 vaccination centres. Measuring instruments from Testo are a valuable aid in this process. They ensure high-precision monitoring of the cold chain, which in turn guarantees the reliable efficacy of the vaccines for all requirements:

  • Refrigerator temperatures from 2 to 8°C
  • Freezer temperatures of from -18 to 0°C
  • Extreme temperatures as low as -80°C.


Regardless of which climatic parameters need monitoring – Testo has the right solution.

testo 184 transport data logger series

testo 184 Transportdatenlogger Serie
  • Complete monitoring and transparency of the cold chain from production to the point of use
  • Different versions for different temperature ranges as low as -80 °C as well as additional monitoring of humidity and shock
  • Data loggers with shock monitoring help to ensure that sensitive vaccine vials stay intact.
  • Robust instruments and maximum data security

Other fields of application and services related to COVID-19

CO2 levels and aerosols

CO2 measuring instruments

Indoor CO2 levels are considered to be an indicator of the aerosol concentrations that enable the airborne transmission of pathogens.

  • CO2 measurement for optimal adjustment of ventilation systems
  • Reduction in CO2 levels for low aerosol concentrations and a reduced risk of infection
  • Hand-held measuring instruments for spot checks or continuous measurement via data logger

Precision measuring technology
laboratories and cleanrooms

testo 400

In laboratories and cleanrooms, the monitoring of other climatic parameters plays a key role in addition to high-precision temperature measurements.

  • The extensive probe portfolio of the universal measuring instruments testo 400 and testo 440 offers the appropriate solutions for all measuring tasks.
  • The high-precision probes designed especially for laboratories and cleanrooms ensure accuracy of <1%
  • Intuitive measurement menus guide the user reliably through the measurement.

Sterilization and freeze drying

testo 190

The validation of sterilization and freeze-drying processes is legally prescribed and a key element of quality assurance.

  • Complete solution testo 190: innovative data loggers, intuitive software and practical accessories
  • Secure positioning of the loggers ensures reproducibility of the measuring values.
  • Efficient flow of the validation process, documentation, calculation of lethality, holding phase and saturated steam conditions

Services: An expert global partner

testo Saveris LS Services

We can offer you a fully comprehensive, individual package of sensor technology, software and customised services. Our specially GxP-trained service team will support you through all process steps with its customer-oriented and focussed approach:

  • Planning and documentation
  • System qualification
  • Software validation
  • Support, maintenance, calibration and validation of your system