Perma Pure Launches New Nafion Dryer for Aerosol Research and Measurement

MUMBAI – Perma Pure, the global leader in sample gas conditioning, has launched a new Nafion dryer in the Indian market. The MD-700 large diameter dryer was specifically developed for humidity control in particle measurement and aerosol analysis applications, but can be used in a wide range of drying or humidifying applications.

In order to minimise particle losses, a laminar sample flow should be maintained through the flow path of the dryer. The MD-700 addresses these performance needs while providing the moisture removal necessary to make accurate measurements across a wide range of flow rates up to 17 lpm. All moisture is removed in the vapour phase with a purge gas flow. Below are links to more information:

MD-700 Web Page


MD-700 Series Dryer Datasheet


MD-700 Series Dryer Product Manual


MD-700 Particle Loss Presentation Developed with TROPOS-Leipzig


As the MD-700 has very low particle losses in practical operation, users and researchers measuring PM 2.5, PM1, or nanoparticles, or performing aerosol research and analysis, now have an effective option to control humidity while improving measurement accuracy for their analyses.

For more information on Perma Pure in India, please contact Sanjeev Rai, India Business Development Manager on M: +91-99100-98244 or e-mail:

About Perma Pure

Perma Pure LLC ( manufactures a full line of gas conditioning products including dryers, humidifiers, filters, coalescers, specialty scrubbers and complete sampling systems for use in medical, scientific and industrial applications. The company is the sole manufacturer of Nafion tubing under licence from the polymer manufacturer, DuPont. Perma Pure is based in Toms River, New Jersey, with representatives and distributors around the world. The company is a 100% subsidiary of Halma plc.

About Halma

Halma, the leading safety, health and environmental technology group, is a public company listed on the London Stock Exchange and has over 5000 employees in nearly 50 subsidiaries worldwide. Halma's subsidiaries make products that protect lives and improve the quality of life for people through innovation in market leading products which make its customers safer, more competitive and more profitable. These subsidiaries are assisting India's economy in areas such as energy, manufacturing, healthcare, water and waste treatment, construction and transport. Halma has an office in Mumbai.

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Media Contact: Sunil Balan,, +91-7738161211, Marketing Manager, Halma India

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