Amazon.com: Air Quality Meter Particle Counter, High Sensitivity PM0.3/2.5/10 um Detector Air Dust Particle Monitor Air Analyzer : Industrial & Scientific
CEM DT-9850M Particle Counter Dust Monitor Professional Cleanroom Tester Laser Air Detector Data Logger PM2.5 PM10 with 2.8" Color TFT LCD Display Channel 0.3,2.5,10μm Temperature Humidity Measure: Amazon.com: Industrial & Scientific
Fluke 985 6 Channel Indoor Air Quality Particle Counter: Indoor Air Quality Meters: Amazon.com: Industrial & Scientific
PCE Instruments Particle Counter PCE-PCO 1 to Measure Concentration of Particles in The air/with Memory/six Sizes of Particles able: 0.3, 0.5, 1.0, 2.5, 5.0 and 10 µm: Amazon.com: Industrial & Scientific