Reference connectors, Luer gauges, leakage test systems, force/torque fixtures and ISO 80369-20 test equipment for small-bore medical connector verification in enteral, respiratory, limb-cuff, neuraxial, intravascular and hypodermic applications.
ISO 80369 testing equipment is used to verify small-bore medical connectors through dimensional gauges, reference connectors, leakage tests, separation force tests, torque tests, overriding resistance tests and stress cracking evaluation.
The correct equipment depends on the connector application, ISO or IEC 80369 part, edition year, Annex method, figure number and required reference interface.
A reference connector is a defined mating interface used during functional testing. It is not automatically the same as a simple go/no-go dimensional gauge, so equipment selection must separate dimensional inspection from leakage, force, torque and other performance tests.
Selecting ISO 80369 testing equipment starts with the intended clinical application, not with visual similarity to a Luer fitting. The series reduces the risk of accidental cross-connections between medical delivery systems. Editions and publication status change, so confirm the applicable edition in the official ISO standards catalogue and record it in the regulatory submission or design-control plan.
| Standard Part | Application | Edition / Status | Testing Focus |
|---|---|---|---|
| ISO 80369-1 | General requirements for small-bore connectors in healthcare applications. | 2025 edition. Confirm the purchased standard and regulatory transition requirement. | Series-level principles, application categories and non-interconnectability framework. |
| ISO 80369-2 | Respiratory and driving-gas connections. | 2024 edition. Confirm corrigendum or customer-specific requirement before quotation. | Application-specific reference interfaces, leakage performance and connection integrity. |
| ISO 80369-3 | Enteral applications. | Application-specific part. Confirm edition and annex method for the connector under test. | Enteral feeding connectors, male/female references, leakage and connection security. |
| ISO 80369-4 | Urethral and urinary applications. | Status must be verified before procurement. Do not assume a published Part 4 requirement without confirmation. | Project-specific review of applicable requirements and reference interface status. |
| IEC 80369-5 | Limb-cuff inflation applications. | IEC publication. Confirm the applicable edition and clause for the project. | Blood-pressure cuff, tourniquet and pneumatic limb-cuff connector testing. |
| ISO 80369-6 | Neural applications. | 2025 edition. New projects should review the current edition instead of reusing a 2016 plan. | Neural connector reference interfaces, performance tests and non-interconnectability review. |
| ISO 80369-7 | Intravascular and hypodermic applications. | 2021 edition. Confirm lock/slip configuration and Figure C.1–C.6 reference connector selection. | 6% Luer taper connectors, dimensional gauges, reference connectors and functional tests. |
| ISO 80369-20 | Common test methods. | 2024 edition. Replaces the withdrawn 2015 edition. | Common performance test methods; use together with the applicable application-specific part. |
The correct test configuration depends on the clinical application, connector design and verification stage. These are the most common scenarios for reference connectors, gauges and functional test systems.
Verification of 6% Luer taper connectors used in intravascular and hypodermic devices, including lock and slip configurations.
Testing small-bore connectors used for enteral nutrition systems while controlling application-specific mating interfaces.
Verification of connectors for neuraxial and other neural applications using the applicable 2025 edition requirements.
Connector evaluation for breathing-system or driving-gas applications and pneumatic limb-cuff inflation equipment.
Engineering teams use reference interfaces and functional systems to qualify connector geometry before design transfer.
Manufacturers and independent laboratories use controlled fixtures and calibrated instruments for repeatable acceptance testing.
Dimensional and mating-interface inspection of a syringe connector using precision ISO 80369-7 gauges and reference connectors.
ISO 80369-7
A purple enteral connector is evaluated with its dedicated application-specific reference interface—not a general-purpose Luer gauge.
ISO 80369-3
A small-bore tubing connector is aligned in calibrated fixtures for controlled separation, torque and pressure-leak testing.
ISO 80369-20No single instrument performs every requirement. ISO 80369 Testing Equipment must be selected according to the connector application, standard edition, mating reference and required method. A defensible system combines the correct reference connector with calibrated pressure, force, torque and environmental equipment.
Application-specific male or female mating interfaces defined by the relevant part and figure. Material, geometry, surface condition and traceability must be controlled.
Go/no-go or profile inspection tools where explicitly defined. A dimensional gauge alone cannot demonstrate leakage, separation or torque performance.
Regulated pressure/vacuum sources, transducers, timers, sealed circuits and fixtures for pressure-decay, liquid leakage and subatmospheric leakage tests.
Calibrated axial loading with appropriate alignment and fixtures for resistance-to-separation testing.
Controlled connection, unscrewing, overriding and disconnection torque with suitable sensors and application-specific holding fixtures.
Environmental conditioning, test media, acquisition and traceable calibration records appropriate to the required method and uncertainty.
Use this matrix to separate dimensional gauge selection from functional ISO 80369-20 testing. It helps engineers and procurement teams confirm whether they need a single reference connector, a Luer gauge set, a fixture package or a complete leakage / force / torque test system.
| Customer Need | Required Equipment | Typical KingPo Solution | Selection Notes |
|---|---|---|---|
| Dimensional verification of Luer connectors | ISO 80369-7 male plug gauge, female ring gauge or Figure C.1–C.6 reference connector set. | ISO 80369-7 Luer Gauge Set and Reference Connectors. | Choose by connector sex, lock/slip configuration and required figure. |
| Leakage by pressure decay or liquid leakage | Application-specific reference connector, sealed fixture, regulated pressure source, pressure transducer, timer and data system. | ISO 80369-20 leakage test fixture or integrated leakage test system. | Confirm test medium, pressure level, stabilization time and dead volume. |
| Subatmospheric air leakage | Vacuum source, reference connector, bubble observation / measurement setup and sealed fixture. | ISO 80369-20 subatmospheric air leakage tester. | Used when the method requires vacuum leakage evaluation instead of positive pressure. |
| Axial separation force | Force tester, calibrated load cell, axial alignment fixture and application-specific reference connector. | Axial load test fixture for ISO 80369 connector separation testing. | Alignment is critical; fixture error can dominate the result. |
| Unscrewing / disconnection torque | Torque tester, torque sensor, coaxial holding fixture and mating reference connector. | ISO 80369 torque test system or torque fixture package. | Confirm rotation direction, speed, axial load influence and peak capture method. |
| Overriding resistance | Combined torque / axial load setup with a rigid connector holding fixture. | Overriding torque fixture for application-specific connectors. | Do not substitute a simple handheld torque wrench for controlled verification. |
| Stress cracking evaluation | Conditioning environment, stressed mating fixture, reference connector and follow-up leakage test system. | Stress cracking setup plus leakage verification equipment. | Requires controlled sequence: conditioning, stress exposure, then functional check. |
Important distinction: ISO 80369-20 does not define every connector geometry. It provides common performance test methods, while each application-specific part defines the connector application, reference interface and acceptance context.
| Test Area | What It Evaluates | Typical Equipment | Critical Control |
|---|---|---|---|
| Leakage | Positive-pressure air or liquid leakage and subatmospheric air ingress. | Reference connector, regulated pressure/vacuum, transducer, timer, liquid circuit or observation setup. | Seal integrity, test pressure, stabilization, media and fixture dead volume. |
| Axial Separation | Resistance to connector separation under an axial load. | Force tester, calibrated load cell, aligned gripping and reference connector fixture. | Axis alignment, loading profile, dwell time and connector preconditioning. |
| Unscrewing / Disconnection | Resistance to unintended unscrewing and controlled disconnection behavior. | Torque system, torque transducer, coaxial fixtures and reference connector. | Connection procedure, rotation rate, axial influence and peak torque capture. |
| Overriding | Resistance to over-torquing or thread/lock override. | Combined torque/axial test configuration and application-specific mating reference. | Applied axial force, torque direction, fixture rigidity and endpoint definition. |
| Stress Cracking | Material performance after defined stress and environmental exposure. | Conditioning environment, mating reference/fixture and subsequent functional leak test equipment. | Conditioning time, temperature, humidity, stress state and test sequence. |
Identify the connector's intended healthcare application and applicable part.
Record the exact standard edition and regulatory or customer requirements.
Match connector sex, lock/slip style and required figure reference.
Configure pressure, force, torque and conditioning equipment for each test.
Record calibration, uncertainty, conditioning, samples, raw data and results.
Start with the guide if the required figure is not yet known. Select the complete set for laboratories handling multiple male/female and lock/slip configurations, or open an individual product page when the standard figure and test object have already been confirmed.
ISO 80369-7 Luer Gauges & Reference Connectors GuideUnderstand connector types, Figure C.1–C.6 selection, test applications and the difference between reference connectors and dimensional gauges.→Review KingPo’s ISO 80369 product guides, connector gauge sets, test equipment categories and project support resources before selecting a complete small-bore connector test configuration.
Request a drawing-linked equipment list, material and hardness specification where applicable, dimensional inspection record, serial-number identification, calibration scope for force/torque/pressure instruments, sample method demonstration and factory acceptance criteria. A certificate for one instrument does not automatically establish traceability for every reference connector and fixture in the system.
No. A reference connector is a defined mating interface used for functional tests. A go/no-go gauge checks a specified dimensional condition. Some products may be informally called gauges, but the required function and figure must be confirmed before ordering.
ISO 80369-20:2024, Edition 2, specifies common test methods used to evaluate performance requirements in the ISO and IEC 80369 series and ISO 18250 series. It replaces ISO 80369-20:2015.
ISO 80369-7 is the current framework for 6% Luer taper connectors used in intravascular or hypodermic applications. Legacy files may still reference ISO 594, so the required regulatory edition and transition strategy must be confirmed.
No. The purpose of the series is application differentiation and reduced misconnection risk. Enteral, neural and intravascular/hypodermic connectors use application-specific geometries and reference interfaces.
That depends on the connector under test and required methods. Testing male DUT connectors generally requires the appropriate female reference, and vice versa. Lock and slip configurations may require different references.
ISO 80369-6:2016 is withdrawn and a 2025 edition is available. New projects should review ISO 80369-6:2025 rather than assuming that a 2016 test plan remains current.
No. Full verification can include design, dimensional, non-interconnectability and functional performance requirements. Leakage, separation, torque and environmental tests require additional calibrated systems and controlled procedures.
Send the ISO or IEC 80369 part and edition, Annex/figure numbers, connector drawing, male/female and lock/slip configuration, required test list, sample availability and certificate requirements.
