Sparta, NJ (June 22, 2017) –Testo, Inc., the world’s leading manufacturer of test and measurement instruments, announces the DiSCmini, the smallest handheld instrument for the measurement of nanoparticle. DiSCmini measures: particle number, average particle diameter and lung-deposited surface area (LDSA) with time resolution and logging at 1 second (1 Hz).  The testo DiSCmini operates without working fluids or radioactive sources and works in any orientation. Measurements can be carried out quickly and easily.

DiSCmini is particularly efficient for personal exposure monitoring in particle-loaded work space with toxic air contaminants such as diesel soot, welding fumes, or industrial nanomaterial, or can be used to access exposure down to a size of 10 nanometers. Raw data files can be imported directly into Excel, or analyzed with a cross-platform software tool.

  • Simultaneous measurement of particle size, mean particle size, and LDSA, with a time resolution of 1 second
  • Mobile operation, unaffected by vibrations and independent of the position of the instrument
  • Easy identification of particle sources, easy set-up of measurement grids and long-term measurements
  • Battery powered with a lifetime of up to 8 hours; data can be recorded on a memory card and transferred to a computer via USB cable

More information can be found at

For more information contact Testo USA headquarters at 800-227-0729 or email

About Testo, Inc.

TESTO is recognized as the worldwide leader in the design, development and manufacture of portable test and measurement instrumentation. Testo’s mission is to provide the best quality, service and value in the industry. Testo products are backed by 60 years of expertise and experience.