Article 9 measures the average of total dust or particulates, size not exceeding 24 hours or at 10 micron in 1 years time, use the metric system of measurement based on a different system or graphics-PCD, comments like.
9. Measurement of the average of total suspended particles, or particulate matter less than 10 microns in 24 hours, or within 1 year, use the measurement system gravimetric or other Pollution Control Department for approval.
Article 9 measure average of total dust or dust size not exceeding 10 microns in 24 hours, or at 1 year using the measured boot gravimetric or other systems at the Department of ควบคุมมล poison for approval.