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Eco-Celli Liquid-Filled Barometer (Acrylic)
The Eco-Celli Liquid-Filled Barometer (Acrylic) is a patented new development in the ecological design of liquid barometers. The Eco-Celli contains no mercury making it a suitable barometer for all schools and many hospitals. Mercury is extremely hazardous especially to the well-being of young children. Cleanup costs for mercury spills can range from $2000 to more than $200000. All of this can be avoided by using the Eco-Celli Barometer.The Eco-Celli barometer consists of a 64-inch-long U-shaped tube filled with a red fluid and gas. The pressure of this red fluid on the gas is the principle upon which the barometer operates (Boyles Law). Adjacent to the barometer tube is a 32-inch-long blue methyl-alcohol thermometer. A truly unique scale that slides between the thermometer and barometer compensates for thermal expansion of the fluid and glass tubing due to changes in room temperature and allows for accurate measurement of air pressure. Finally the barometer scale is four times larger than a mercury barometer making it much easier to make readings of air pressure. The temperature scale measures in Fahrenheit and Celsius while the pressure scale measures in both millimeters and inches. A scale that reads in both inches and millibars (hPa) is also available.The Eco-Celli comes with a calibration kit to adjust the unit for an altitude above sea level. The frame and glass tubes are packaged separately in the same box and require simple assembly by the final purchaser.This model has been specifically designed for use in school science classrooms and laboratories. It is made of durable clear acrylic one-half-inch thick with very easy to read scales. The glass tubes are easily replaceable if broken.Measurements:U-shaped tube: length - 32.28 inches width - 1.57 inchesThermometer tube: 32.28 inchesThermometer scale: 32 to 122 degrees F 0 to 51 CBarometer scale readings from 28.80 to 31.00 inches and 732 to 782 mmFrame size - 36.5 inches long by 5.75 inches wide
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