Perma Pure

About Perma Pure:

Perma Pure is the world wide leader in providing unique gas sample conditioning solutions. We offer a wide range of Sample Gas Dryers, Humidifiers, Moisture Exchangers and Accessories, including full Sample Conditioning Systems for virtually any analytical application using our exclusive Nafion® tubing as the moisture transfer membrane. Our business is divided into three segments.

Medical Devices – As an FDA registered Medical Device Manufacturer with ISO 13485 certification, our Medical Breath Dryers are used for Breath Gas Analysis applications and humidification of Oxygen and Nitrogen for ventilator applications. We also specialize in high volume Medical Sample Lines.

OEM Gas Analyzers and Analytical Devices – Our Gas Sample Dryers are used as components in a wide range of Gas Analyzers and Scientific Analysis Equipment. Our Gas Humidifiers are used for Fuel Cell Humidifiers and for Incubators and Test Chambers for environmental control.

Gas Sample Conditioning Systems for Emissions and Process Monitoring –  Our Unique Nafion®-based Gas Sample Conditioning Systems solve many problems measuring SOx and NOx emissions for the CEMS and Process Monitoring markets. We also offer Baldwin Sample Gas Coolers,  Extraction and Dilution Gas Sample Probes and Sample Gas Conditioning Systems.

Perma Pure LLC was founded in 1972 and is headquartered in Toms River, NJ, USA.  Perma Pure LLC is a Halma company, and as a result has access to technology, investment, and manufacturing in support of a global business.


Perma Pure LLC manufactures components and devices primarily designed to dry and humidify gas streams. Our core technology is Nafion®, a Dupont co-polymer that is highly selective in the removal of water. We manufacture Nafion into tubing of various diameters to optimize the transfer of water through the Nafion. The water moves through the membrane wall and evaporates into the surrounding air or gas in a process called perevaporation. This process is driven by the humidity gradient between the inside and the outside of the tubing. In addition to drying and humidifying, our products can be used as ion exchange membranes and specialty separation membranes that take advantage of the unique properties of Nafion.

Key Product Applications:

Medical uses include the drying of breath for anesthesia monitoring, respirator monitoring, and metabolic testing, as well as humidification of respirator air or supplemental oxygen. Removal of excess water prior to breath analysis protects analyzers and improves the accuracy and precision of analysis. Humidifiers raise the moisture content of dry respirator air to protect patients from dehydration.

Industrial uses include gas sample conditioning for process monitoring or environmental compliance monitoring. Stack gases must be conditioned to convert hot, wet and dirty gases into the cool, dry and clean samples required by analyzers. Perma Pure offers complete systems to accomplish this sample preparation as well as individual components for incorporation into other conditioning systems.

Scientific uses include exploitation of the electrochemical and ion exchange properties of Nafion, as well as sample conditioning for laboratory analysis. Nafion is closely related to Teflon but has been chemically modified to make it function as an ion exchange membrane while still retaining the physical and corrosion resistance properties of Teflon.


Perma Pure has received ISO 9001: 2008 and ISO 13485: 2003 certification.

Perma Pure in India:

Perma Pure’s products have been sold to Indian customers from *** through distributors. The India Sales responsibilities are in the hands of Mr. Sanjeev Rai.

For more Information visit:

For Enquiries Contact:

Sanjeev Rai

India Sales Manager

Mr. Sanjeev Rai


Mob: +91 99100 98244