Abrasive particles act as little saw teeth, cutting organic material when it expands and contracts from humidity fluctuations or scratching finely polished surfaces. Acid corrodes metals and destroys organic material. Sulfur dioxide, a common pollutant gas, is formed from burning fossil fuels. It turns into sulfuric acid in the presence of water and can rapidly disintegrate carbonate materials such as chalk, limestone, marble, and alkaline sandstone. Oxidizers, primarily ozone and nitrogen dioxide, are produced when oxygen breaks down.
Oxidizers react with all organic materials causing structural breakdown.
They attack dyes, pigments, inks, cotton, basketry, paper and polyesters. Nitrogen dioxide also forms nitric acid in the presence of high relative humidity, resulting in damage that is similar to that caused by sulfuric acid. A fabric carrying tote with shoulder strap that carries the vacuum and accessories also is available. Vac Supreme is the next largest vacuum in the line. This 12 lb.