Removing and replacing keys on Acer Aspire laptop's keyboard may require a small screwdriver for precision. Keyboard keys of Acer laptops designed for easy removal and replacement.
How to Measure Air Pollution for a Science Fair Project. Pollution is one among the major problems of todayâs world and air pollution is one root cause of many environmental issues. You can use a magnifying glass for this purpose as the dust particles are too tiny to be seen with necked eye. 2  Count the number of dust particles carefully stuck to the Vaseline in each square and note them down on a note book. 3  Use the number of dust particles sticked to the squares as a proof of air pollution.
Ambient Air Analyzer. The ambient air analyzer measures and tests VOCs and a large list of atmospheric gases. They let you easily collect and analyze air samples. Galsonâs air analyzers include the ambient air analyzer, dust/particulate, gas monitors, IAQ monitors, mercury monitors, ozone monitors. Mercury is, of course, important to monitor.