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.
The Bostwick Consistometer is the preferred choice for measuring consistency and flow rate in a variety of products. You can use the Bostwick on any viscous material such as sauces, salad dressings, paints, chemicals or cosmetics.The normal way to use the Consistometer is to measure the distance a sample flows in a given time interval. The Bostwick is a long trough with 0.5 cm graduations along the bottom.The trough is separated near one end by a spring-loaded gate. This forms a chamber where the sample is loaded.ou can use the Bostwick on any viscous material such as sauces, salad dressings, paints, chemicals or cosmetics. The normal way to use the Consistometer is to measure the distance a sample flows in a given time interval. The Bostwick is a long trough with 0.5 cm graduations along the bottom.