Certificate for the management system according to ISO 9001:2015

Our Company is certified to the ISO 9001:2015 standard within the scopes of development, production, consulting and sale of measurement technology, control engineering and aids for the blind.



Declaration of Conformity for PNS 18T-DM-3.1

German certification provider TÜV SÜD in 2017 tested the Comde-Derenda Sequential Low Volume Sampler PNS 18T-DM-3.1 regarding its compliance with EN 12341:2014. As a result, TÜV SÜD confirmed that the device complies with the above-mentioned Standard and can be used as a Standard / Reference Sampler for PM10 and PM2.5.

Please klick HERE to view the complete test report (only the German version is available at the moment).

Certificate of Product Conformity (QAL1) APM-2


The certified Comde-Derenda APM-2 is suitable for the continuous monitoring of the PM₁₀ and PM₂.₅ fractions in suspended particulate matter in ambient air (stationary operation). The suitability of the AMS (automated measuring system) for this application was assessed on the basis of a laboratory test and a field test at four different sites and periods of time.

Attestation of sound emissions according to EN ISO 3744:2010


Our environmental monitoring devices LVS, APM-2 und PNS 18T-DM were successfully tested by TÜV SÜD Industrie Service GmbH regarding their sound emissions according to EN ISO 3744:2010. The test results showed that all tested devices emit low levels of noise during operation. See the datasheets of the individual devices for the exact test results.