Biotest offers a wide range of airborne particle counters for the determination of particulate contamination. Particles with a minimum size of 0.3 µm can be detected. These instruments can be used for a variety of purposes such as monitoring or mobile use in cleanrooms, indoor air quality and filter testing, contaminant migration studies etc. The product range includes both handheld models and portable units with high performance (air flow up to 100 lpm).