Atlas High Purity gives a brief technical summary of AAMI TIR 34 water guidelines for central sterile water systems

AAMI (Association for the Advancement of Medical Instrumentation) issued Technical Information Report (TIR) 34 in August, 2014, in order to highlight water quality recommendations for critical rinse and utility water in central sterile applications. 

The purpose of these recommendations is to help minimize adverse patient events resulting from poor water quality. It is important to note that a TIR differs from a “standard,” which requires a more critical review process.

TIR 34 divides water types into two classes: Utility Water and Critical Water. Utility Water is used during the first stage of reprocessing. Critical Water is used for final rinse or steam generation.

The report also recommends visual daily checks for resistivity/conductivity, turbidity, pressure drop across filters, and temperature. Please visit for more details regarding TIR 34.

TIR 34 water standards

Atlas High Purity and AAMI TIR 34 Critical Water

Atlas designs, installs, and services high purity water systems. We work with the top OEMs in the industry including AmeriWater, GE Osmonics, Aquafine, and more. Our team of engineers designs systems capable of delivering Critical Water that meets AAMI TIR 34 recommendations.

High purity water systems require service in order to continually meet Critical Water quality recommendations. Our team of expert service technicians helps ensure that central sterile water systems are meeting your water quality standards. Atlas are available for 24-hour emergency service. Please contact Atlas for support with your central sterile water system.

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Atlas High Purity has been designing, installing, and servicing high purity water systems for more than thirty years, and is the leading provider of reverse osmosis and DI water solutions in the northeast United States.