Permapure dryers are powered by Nafion™ polymer which is often referred the wonder material for its unique ability to transfer moisture from one side of the membrane to the other. This transfer occurs as a first order kinetic reaction making it highly selective. Permapure Nafion Polymer tubing  selectively removes water vapor from a gas sample leaving most analytes in the gas stream untouched. This selectivity for water vapor allows Permapure dryers to remove more moisture than other drying solutions, while maintaining analytes and water-soluble analytes in the gas sample. Perma Pure solutions dry, humidify, and condition gases to improve accuracy of measurement and reduce gas analyzer down time.