The Diffusion Size Classifier testo DiSCmini is a handheld sensor for the measurement of nanoparticle number, average diameter and lung-deposited surface area LDSA with a time resolution of up to 1 second (1Hz). The measuring principle is based on electrical charging of the aerosols.

The small size of the testo DiSCmini makes the instrument particularly suitable for personal carry-on measurement campaigns. The instrument is battery powered with a lifetime of up to 8 hours and it can also be used as a stationary system by using the delivered mascot battery charger. Data can be recorded on a memory card and transferred to an external computer via USB cable.

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