Finding F-0110

“Theoretical derivation and data fitting determined correction factors of 1.32 for infrared spectrophotometry, 2.13 for the optical particle counter for particles larger than 0.3 μm, and 0.97 for the photometer.”

Wang et al. Cooking Fume Particulate Matter as an Indoor Air Pollution Source: Comparative Measurement Methods and Correction Factors (2026). Page 1. CKB 1077

Structure

Source: Cooking
Factor: Particulate matter (PM₂.₅ and PM₁₀)
Method: Optical particle counter
Setting: laboratory, CN
Study design: laboratory measurement-method comparison: cooking fumes generated under simulated typical cooking conditions, manual gravimetric analysis as benchmark against an optical particle counter (Promo 3000), a photometer (DustTrak 8533) and infrared spectrophotometry (class 4)
Effect: ratio 2.13
Caveat: the authors state the factors are instrument- and aerosol-specific, not universal constants

A Finding records what one published document states, verbatim and with its page. It is not a conclusion of Coridum; see the Claims that build on it.