The biased uncertainty of each measurement method was based on previous studies, specifically 3% uncertainty in particle mobility diameter by DMA classification 68 , 4.7% uncertainty in particle aerodynamic diameter by AAC classification 69 , 2.8% uncertainty in particle mass by CPMA classification 70 and 10% uncertainty in particle concentration using a CPC 71
Heres exactly how I evaluate air purifiers: Test Environment Primary Test Space: 728 cubic foot room (approximately 12 13 8 ceiling) Secondary Test Space: Sealed 4 cubic foot acrylic smoke box for controlled tests Ambient Conditions: 68-72F, 40-50% humidity, baseline ambient noise 28-30 dB Equipment Used TSI AeroTrak 9306 Particle Counter ($4,500 professional-grade unit, not a consumer sensor) Measures PM1, PM2.5, PM10 with laboratory accuracy Extech 407768 Sound Level Meter (Type 2, calibrated) Measures decibel levels to within 0.1 dB Kill-A-Watt P3 Power Meter Tracks energy consumption to 0.01W precision Smoke Source: Standardized incense sticks (for repeatability across tests) and actual cigarette smoke (for real-world validation) The 5 Core Tests I Perform Test 1: Smoke Box Speed Test I fill a sealed 4 cubic foot acrylic box with dense smoke until visibility is near zero (PM2.5 typically exceeds 1,000 g/m)
Intensity of use was measured by the average number of cigarettes smoked per day during the preceding 7 days (five or fewer, 6-15, or 16 or more) and by the number of times SLT was used on the days it was used (1-2, or three or more)
Varenicline is considered the most effective smoking cessation treatment
Like "Memento," it's a thinking person's film
