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Testo Ltd

Testo Ltd Contact Details

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01420 544 434
Ashton Baylis
Newman Lane
County Hampshire
GU34 2QJ

About Testo Ltd

Testo Instruments are widely used in the following sectors:
HVAC-R: heating, ventilation, air conditioning and refrigeration.
Process Industry: manufacturing industries, service companies and utilities.
Food Sector: including food manufacture, transport, storage and retail.
Thermal Imaging: for building surveys, maintenance, electrical inspections and production monitoring.

Our main website is designed to allow easy purchasing of Testo products, whilst providing you with vital technical data, new products/promotions and support through our FAQ Forum. Testo Instruments cover a range of measurement parameters including: Thermal Imaging, Temperature, Humidity, Velocity, Compressed Air Measurement, Gas analysis, RPM, Pressure, Light, pH, Sound and Instrument Service and Calibration.


Testo manufacture measuring instruments for the heating, ventilation, air conditioning and refrigeration industries. Testo instruments for HVAC R are of the highest quality and are internationally trusted. Measurement parameters include flue gas, temperature, CO, CO2, air flow, pressure, emissions, humidity and much more.

Food Safety
Testo offer a wide range of equipment for food safety which will help you meet your HACCP requirements and give you the reassurance you are storing and cooking your food safely. Our instruments include HACCP management systems, temperature monitoring systems, data loggers, thermometers, cooking oil testers, PH meters and much more. Whether it is for spot checks or long-term monitoring, from farm to fork, Testo has the right instrument for the job.

Temperature and Humidity Monitoring
Testo have many options for Temperature and Humidity monitoring. Whether you're monitoring temperature, humidity, or absolute temperature, Testo have got you covered.

Science & Healthcare
Testo provides superior measurement instruments for use in the scientific, pharmaceutical and healthcare industries:
  • R&D
  • Pharmaceutical Production
  • Hospitals
  • Pharmacies
  • Drug Storage and Transportation
  • Cleanrooms

Testo supply a number of products to the heritage sector. Whether you need to measure temperature, humidity, lux, shock or indoor air quality (IAQ), we've got the measures to make sure your artefacts are properly maintained.

Thermal Imaging
Testo manufacture an extensive range of quality thermal imaging cameras, suitable for a wide range of applications. Testo thermal imaging cameras are universal and the impressive list of features allows for their use spanning many industries.

Our thermal imaging camera range extends from our entry level testo 870 through to the high-end testo 890 to ensure that there is a Testo thermal imaging camera for every budget and requirement.

  • Probes
  • Cases and Storage
  • Other

Service and Calibration
  • Quality flue gas analyser servicing & calibration from instrument specialist Testo
  • No contract - simply choose from two service options, Pure and Premium
  • Premium service includes the fastest turnaround in the business - just 3 days guaranteed, plus added extras worth more than £40
  • To Book Your FGA Service & Calibration click the link below or contact the Service Department on telephone 01420 566845 or email

Testo Rental Instruments
Some of Testo’s equipment represents a reasonable investment for customers and sometimes it is not 100% clear if the application is justified to warrant this investment.

We also know that once customers have the opportunity to use a Testo Instrument the high product quality is immediately apparent and it makes the product selection process much easier.

Testo TRI allows you to experience Testo’s products before purchase by using a Try Then Buy principle. This operates by allowing you to experience Testo’s instruments in your own time, on site or at home, by renting. This way you ensure it is what you need and that it is the right instrument for your application. At the end of the rental period you have the choice to either return the instrument or purchase.


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2023/12/06 10:24:07