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RASIRC's RainMaker Humidifier Allows Sterile Transfer of Water Vapor into Process Gases.

Unique non-porous membrane technology excludes micro-droplets, metals, and dissolved gases from water vapor or steam during transfer

SAN DIEGO -- RASIRC([TM]), the steam purification company, introduces the RainMaker[TM] Humidifier, a device that controls the transfer and purification of water vapor directly into a gas stream. With the RainMaker, controlled and purified water vapor can be delivered into most carrier gases, including inert, corrosive, and flammable gases such as hydrogen, at a wide range of flow rates. The membrane assembly has no epoxies or adhesives so is the first humidifier that can be steam sterilized for sanitary applications. This is especially beneficial for medical and pharmaceutical applications, where sterilization of components is often a critical requirement. In addition, the Rainmaker can tightly regulate relative humidity (rH) by controlling water supply temperature. Constructed of 316L stainless steel and Teflon([R]), the RainMaker is designed for high purity applications.

The RainMaker Humidifier consists of a non-porous, hydrophilic Teflon[R] membrane that excludes particles, micro-droplets, volatile gases, and other contaminants in the liquid source from permeating the membrane while rapidly transferring water vapor across it. Many controlled processes require precise amounts of water vapor to be added to ensure that the correct humidity level is maintained. Processes using nitrogen, CDA, or synthetic air are dry and must be re-hydrated for the process to proceed. Examples include cell growth, combustion temperature control, fuel cell stability, and plasma etching of surfaces for adhesives and paint processes.

No other technology can match the purity, simplicity, and performance results of the Rainmaker Humidifier. Bubblers are low cost, but have inaccuracies due to the temperature of the gas and liquid, the operating pressure, liquid level, and thermal droop. They cannot prevent entrainment of dissolved gas, volatile molecular contaminants, and micro-droplets which can carry particulate and ionic molecular contaminants. Membrane contactors use porous hollow fibers to allow transfer between a liquid and gas, but allow transfer in both directions. They cannot be used above 50 degrees C. Membrane contactors and bubblers have high pressure drops and very limited gas flow rates.

"The RainMaker Humidifier is designed for critical processes where temperature, purity, control, and sterility matter. Finally, there is a way to add water vapor to a process without worrying about the water," said RASIRC founder and president Jeffrey Spiegelman. "Customers call all the time with new applications which cover the entire gambit of manufacturing processes, and we are happy to be able to offer them a solution that didn't previously exist."

Photo available at http://www.rasirc.com/news/downloads/photos/rainmaker.jpg

Datasheet available at http://www.rasirc.com/library/RainMakerX.pdf

About RASIRC

RASIRC develops products that purify and deliver ultra pure liquids and gases, with a primary focus on water vapor. While steam is used extensively in the semiconductor industry, RASIRC technology is the first to purify live steam to generate ultra high purity (UHP) steam. Starting with de-ionized water and using specialized membranes to reduce total metals to less than 10 parts per trillion while achieving very high flow rates, this technology reduces cost, improves yield, and dramatically improves safety. The UHP steam generated by RASIRC products is of critical importance for many applications in the semiconductor, pharmaceutical, medical, biological, fuel cell, and power industries. For more information, contact Jeffrey Spiegelman at +1 858-259-1220, e-mail info@rasirc.com, or visit the website at www.rasirc.com.
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Publication:Business Wire
Date:Apr 3, 2007
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