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Test now ...


  • Web-Graph Air Quality

    No need for an outside sales visit: You will receive...

    ... a unit for sampling which you can quickly and simply try out yourself.

    ... 30 days of testing with no obligation, to verify that the device work in your application (with right of return).

    You can take your time to see whether our device (+ accessories) fits your application.

    If the sample is returned within 30 days, you pay only the return shipping charges (within Germany). If you decide to keep the unit, simply pay the enclosed invoice.

    This does not of course affect the right of cancellation for private customers.


    ... expert assistance from our technical department if needed.


Items ordered by 4:00 pm are shipped the same day! Select the Web-Graph that meets your needs:

  • Web-Thermometer Air Quality
    Temperature, relative humidity and air quality measurement



  • Web-Thermo-Hygrobarometer
    Temperature, humidity air pressure measurement



  • Web-Thermo-Hygrometer
    Temperature and relative humidity measurement