As the dirt-filled air makes its way to the exhaust port, it passes through the vacuum-cleaner bag. These bags are made of porous woven material (typically paper or cloth), which acts as an air filter. The tiny holes in the bag are large enough to let air particles pass by, but too small for most…
Before vacuum cleaners existed, people had to take their carpets outside and beat the dirt out of them. Some people cleaned their carpets only once a year during the spring. Now vacuuming has become an essential in providing a clean facility and done more frequently because of the innovated people mentioned below. The first vacuum…
During World War II, HEPA filters were created to remove radioactive particles from the air. HEPA stands for “High Efficiency Particulate Air,” and by definition, a HEPA filter must capture at least 99.97% of all particles down to 0.3 microns in size. Household allergens average between one and ten microns in size. We recommend that…
