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Automated Loan Filling (ALF) Core Training Study Guide based on the updated 2026/2027 syllabus
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---15April 20262025/2026A+
- Automated Loan Filling (ALF) Core 
Training Study Guide based on the 
updated 2026/2027 syllabus 
Domain 1: Indoor Air Quality (IAQ) & Contaminants 
1. What is the definition of a "micron" as it relates to air filtration? 
A unit of length equal to one-millionth of a meter (µm), used to measure particle size 
and filter efficiency. 
ANSWER 
2. Particles between 0.01 µm and 1.0 µm are primarily captured by which 
mechanism? 
Diffusion (Brownian motion). 
ANSWER 
3. What are...
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