ISO 16954:2015 pdf free

ISO 16954:2015 pdf free.Dentistry – Test methods for dental unit waterline biofilm treatment
If the test apparatuses consist of dental units, the dental units shall represent the most challenging model or configuration (when more than one model or configuration is available from the manufacturer). Length of waterlines, number of branch waterlines and likelihood of stagnation are among the factors that shall be considered in determining the most challenging model or configuration.
If the test apparatuses consist of surrogate dental unit water systems, the surrogate dental unit water systems must be able to simulate the basic clinical performance parameters of a functioning dental unit, including as described in 6.2. The surrogate dental unit water systems must represent the most challenging model or configuration of the dental unit which the surrogate dental unit water systems are intended to represent (when more than one model or configuration is available from the manufacturer).Surrogate dental unit water systems shall accurately recreate the procedural water delivery system,including design, construction, configuration and operation of the water-bearing elements of the procedural water delivery system. Other components which do not directly come in contact with or control the flow of procedural water need not be included, such as structural and decorative components.The components of surrogate dental unit water systems shall be subject to the same environmental conditions (i.e. light exposure and temperature) as components in the dental units which they represent.
Any air gap system or other backflow prevention device required to comply with the backflow prevention requirements of ISO 7494-2 for isolating the procedural water from the incoming water shall be included in the test apparatuses.
Dental units or surrogate dental unit water systems shall include at least one hose which in normal use supplies procedural water to a handpiece and one hose which in normal use supplies procedural water to a multifunctional (air/water) syringe. Hoses which normally supply procedural water to other instruments that are attached to the dental unit can be included in the dental units or surrogate dental unit water systems. Dental handpieces or other instruments or attachments that are normally removed from the dental unit and sterilized between patients shall be disconnected from the hose and not used in this test if practical.ISO 16954 pdf download.