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10D10.30 - Air Pollution

Code Number: 10D10.30
Demo Title: Air Pollution
Condition: Good
Principle: Air Pollution
Area of Study: Chemistry and Physics
Equipment:
Air Pollution Indicator.
Procedure:
Hold the card up while observing the sky. Match as closely as possible one of the opacity windows with what you observe. This will give you a rough indication as to the present level of pollution. This will be particularly useful if traveling to Beijing, China.