Sub Atmospheric Compressed Air Leakage Test

Sub Atmospheric Compressed Air Leakage Test

The required subatmospheric pressure means that the pressure applied to the sample must be 80 kPa to 88 kPa below the ambient atmospheric pressure. This requirement poses a potential difficulty in implementing the relevant standards.

Sub Atmospheric Compressed Air Leakage Test

The following standards published by the International Standards Organization (ISO) are part of a set of standards developed to prevent misconnection between small diameter connectors used in different healthcare applications:

  • ISO 80369-6 Small diameter connectors for liquids and gases in healthcare applications - Part 6: Connectors for neuraxial applications
  • ISO 80369-7 Small diameter connectors for liquids and gases in healthcare applications - Part 7: Connectors for intravenous or subcutaneous applications
  • ISO 80369-20 Small diameter connectors for liquids and gases in healthcare applications - Part 20: Common test methods

The ISO 80369-20 standard includes test methods, while the ISO 80369-6 and ISO 80369-7 standards contain requirements for small diameter connectors.

The ISO 80369-6 standard is for small diameter connectors for neuraxial applications. The ISO 80369-7 standard is commonly for small bore connectors for intravascular or hypodermic applications. Both of these standards require these types of small diameter connectors to be evaluated for subatmospheric compressed air leakage.

The pass/fail evaluation is based on the pressure change and volume in the evacuated valve over a fixed period of time. 80 Pa m88/s' when exposed to a subatmospheric pressure between 0,005 kPa and 3 kPa for a given holding timeThey should not leak more than

The standard atmospheric pressure at sea level is 101.325 kPa. Atmospheric pressure decreases as altitude increases because less air is pushed downward at higher elevations. This is an approximately linear decrease at low altitudes where the atmospheric pressure decreases by about 100 kPa per 1,2 meters. Where the atmospheric pressure is less than 80 kPa, it is impossible to create a pressure 80 kPa below this atmospheric pressure, since this implies a negative absolute pressure.

Our organization, among the numerous test, measurement, analysis and evaluation studies it provides for businesses in various sectors, also provides sub-atmospheric compressed air leak test services with its trained and expert staff and advanced technological equipment.

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