Description
Perma Pure gas dryers utilize Nafion™ tubing to precisely target and remove water vapor from your gas samples. This unique technology allows them to outperform other drying methods by removing more moisture while safeguarding the integrity of your sample (including any analytes).
For applications requiring high flow rates (up to 40 liters per minute), the Polytube Dryer Series (PD-Series) is your ideal choice. Unlike our single-tube dryers, the PD-Series features multiple Nafion™ tubes bundled together. This design enables a larger volume of gas to travel through a shorter path, making it perfect for high-flow situations. Additionally, the increased surface area of Nafion™ tubing in the PD-Series translates to the highest drying capacity among our gas dryers.
How it works?
Flow your sample gas through the Nafion™ tubing and flow a dry purge gas outside the Nafion™ tubing, countercurrent to the sample gas flow.
While the partial pressure of water in the purge gas is less than in the sample gas, Nafion™ polymer will selectively transfer water and water vapor from the sample gas across its membrane and into the purge gas flow, yielding a drier sample gas at the sample gas output.