IAPMO publishes standard for scale reduction devices
The International Association of Plumbing and Mechanical Officials released IAPMO/ANSI Z601-2018, Scale Reduction Devices. IAPMO/ANSI Z601 covers scale reduction devices intended for residential and similar water-heating applications and specifies general, material safety, structural integrity and minimum performance testing requirements. The standard can be purchased and downloaded via the IAPMO Online Bookstore.
IAPMO/ANSI Z601 is the product of more than 10 years of development. Although several alternatives to ion-exchange water treatment devices have the potential to offer solutions to consumers’ need for scale reduction, lack of an appropriate test protocol that can be used to certify their effectiveness has slowed their adoption, IAPMO noted.
IAPMO/ANSI Z601 creates a protocol for the testing of devices that have the potential to reduce encrusted scale in water, in residential and similar applications and associated plumbing. The definition of a “device” has been intentionally left open in this standard so that any appropriate means or method with the effect of reducing scale can be tested for its effectiveness. This approach makes it possible to test a wide variety of devices.
Conformity with IAPMO/ANSI Z601 is determined through performance testing and the established minimum requirements for the reduction of scale. The scale produced in two treated test stations is compared to the scale produced in two control (untreated) stations. The test stations must reduce the amount of scale produced by at least 70% when compared to the control (untreated) stations for acceptance.