The fine dust monitor models 1.101 and 1.104 are capable of simultaneous measurements of Inhalable, Thoracic and Alveolic (respirable) dust masses ranging from 1 to 65,000 µg/m3.

Additional features which are available with the 1.105 and 1.108 models include:

  • Particle counts from 1 to 2,000,000 particles/liter.
  • Particle sizing in 8 or 15 different channel sizes.
  • Dust mass distribution determination
  • Filter efficiency determination
  • Sample collection on removable 47mm Teflon filters.
 To insure safer conditions in the workplace, international standards pertaining to indoor air quality (IAQ) have been established. For example, the standard guidelines for the maximal allowable dust concentration conditions during any given eight hour work period are clearly defined in Europe under EN-481 and internationally in ISO-7708. The United States uses AIHA, Japan uses Occupational Health Association and both follow very similar standards.

All GRIMM 1.100 dust monitors are capable of simultaneously measuring in real time not only the Inhalable dust mass level but the the Thoracic and Alveolic dust masses at the same time. All these results can be obtained in parallel with one single unit.

Grimm’s enhanced aerosol spectrometers are the world’s smallest family of battery operated portable units available on the today’s market. On the left side in the above photo you can see the model 1.108 with its 15 size channel count and mass distribution analyzer, on the right is the standard occupational analyzer and model 1.101 the standard workplace monitor as outlined above. The 1.108 also has a data storage card. Our portable dust monitors, used worldwide, have an internal pulse-free sampling pump, internal data storage, a removable data storage card and large LCD display, all of which are controlled via microprocessor. The unit can be operated by using the command buttons on the face of the instrument or by a laptop/PC using our proprietary software.

All monitors include our patented dual technology where first measure in real-time the particle size and mass distribution, generated through a scattered laser light, then permitting a validation/correlation by weighing the sampled dust collected on the integrated filter. This post-„ field correlation" allows you to analyze if there is always the monitor functioning as it should.