testo DiSCmini - handheld measuring instrument for nanoparticle counting

Order-Nr.  133

  • Measurement and display of particle number, mean particle diameter and LDSA (Lung Deposited Surface Area) with a time resolution of 1 second.

  • Operation without solvents or radioactive radiation sources

  • Insensitive to vibrations, and operation is possible in any position

  • Long battery lifetimes of up to 8 hours

Use the testo DiSCmini to monitor personal exposure to ultrafine particles (UFP) in work areas or to toxic pollutants such as diesel soot. This will enable you to minimize any risks to health.


Product Description

The hand-held particle counter testo DiSCmini measures the number and average diameter of nanoparticles efficiently, based on the electrical charging of aerosols. For example, with the testo DiSCmini you can reliably monitor human exposure to diesel soot, welding fumes or industrial nanoparticles. With the handy testo DiSCmini, you can take your measurements anywhere.

Health risk due to nanoparticles

Previous studies describe the negative impacts of ultrafine particles on health based on vague benchmarks. With the testo DiSCmini, it is now possible to measure the particle number concentration and surface area of occurent nanoparticles, LDSA (Lung Deposited Surface Area).


Typical applications

Typical applications of the DiSCmini include the determination of personal exposure in particle-contaminated workplaces (for example due to diesel soot, welding fumes and industrial nanoparticles) or in vulnerable groups (such as asthmatics or COPD patients). In addition to this, the testo DiSCmini offers various application possibilities in different disciplines of scientific research.

The small size of the testo DiSCmini makes the instrument particularly suitable for mobile on-site measuring tasks and the set-up of networks for the monitoring of ambient air. Thanks to the measurement rate with a time resolution of 1 Hz for all three measurement parameters, you also identify quick alterations in the aerosol number.

testo DiSCmini at a glance

  • Hand-held nanoparticle counter for measuring the number and average diameter of nanoparticles, with a time resolution of up to 1 second (1 Hz)
  • Simultaneous recording of particle number concentration and particle size enables you to determine other characteristic parameters such as particle surface area (Lung Deposited Surface Area, LDSA)
  • Battery operation with a service life of up to 8 hours
  • Save the data on a memory card and transfer it to an external computer via USB
  • No operating resources such as working fluid or radioactive sources are needed – the testo DiSCmini can be operated over extended periods in any position
  • No operating resources such as working fluid or radioactive sources are needed – the testo DiSCmini can be operated over extended periods in any position and with no topping up of any fluid

Delivery Scope

Handheld nanoparticle counter testo DiSCmini including transport case, carry bag, SD card and SD card reader, set for extending of the sample inlet, Mascot battery charger, country-specific power cord (optional) and calibration certificate.

Technical Data

General technical data

Operating humidity

< 90 %RH, non-condensing


700 g


180 x 90 x 42.5 mm

Operating temperature

+10 to +30 °C

Battery life

8 horas con la carga de batería completa, dependiendo de la temperatura ambiente

Power supply

Alimentación, 100-120 Volt o 200-240 Volt, 50/60 Hz (baterias)

Operating air pressure

800 to 1100 mbar absolute

±20 mbar (Delta p max. on the air inlet)

Nano Particle

Particle size

10 to 300 nm (Modal value)

10 to 700 nm (absolute)

Particle concentration

1000 to 1000000 Particle/cm³ (typical values)

The evaluated particle concentration depends on the particle size distribution and the mean measurement time.


±30 % typical for size and number

±100 Particle/cm³ absolute in number


Product Brochures