Connection context
Identify the respiratory device, accessory and intended connection.
Two distinct connection contexts
Respiratory Connector Testing
Respiratory equipment can contain different connection systems. First identify whether the DUT uses an ISO 80369-2 small-bore respiratory connector or an ISO 5356-1 cone or socket used with anaesthetic and respiratory equipment. These are separate interface families and require different reference products, gauges and verification paths.
Application-led selection
Identify the physical connector first, then choose between the ISO 80369-2 small-bore path and the separate ISO 5356-1 cone or socket path.
Typical devices and DUTs
Begin with the product being evaluated
Respiratory equipment may contain R1 or R2 small-bore connectors as well as breathing-system cones or sockets. The device category alone cannot select the standard.
- Medical devices with R1 small-bore respiratory connections
- Medical devices with R2 small-bore respiratory connections
- Respiratory accessories using the defined small-bore interfaces
- Breathing-system components using ISO 5356-1 cones or sockets
- Anaesthetic equipment connection components where ISO 5356-1 applies
Connector and standard context
Confirm the connector family before choosing the standard
ISO 80369-2:2024 specifies two small-bore respiratory connectors: R1 for lower-pressure applications and R2 for higher-pressure applications. The project still needs to identify which connector is present and which side is the DUT.
ISO 5356-1:2015 addresses dimensional and gauging requirements for specified cones and sockets used with anaesthetic and respiratory equipment. It is not another name for the ISO 80369-2 small-bore system.
Engineering review
Questions to answer before equipment selection
The review must resolve the interface family, R1 or R2 designation where relevant, DUT side and project edition before a reference product is recommended.
- Is the DUT a small-bore connector or an anaesthetic/respiratory cone or socket?
- If ISO 80369-2 applies, is the interface R1 or R2?
- What operating connection and device accessory contain the DUT?
- Which side and mating interface are under evaluation?
- Is the requirement dimensional, leakage-related or mechanical?
- Does the project documentation identify the applicable edition?
Typical test path
From the DUT to a complete verification setup
Once the connector family is identified, the matching gauge or reference interface, fixture and measured behavior can be selected without mixing standards.
Interface family
Separate ISO 80369-2 small-bore connectors from ISO 5356-1 cones and sockets.
Reference product
Select the matching connector, plug, ring gauge or other controlled interface.
Method and fixture
Define the measured behavior and how the sample will be supported.
Equipment and evidence
Confirm the measurement channel and requested result documentation.
Verification priorities
Define the engineering requirement before the instrument
Treat ISO 80369-2 and ISO 5356-1 as separate selection paths even when both kinds of connection appear within respiratory equipment.
ISO 80369-2 small-bore context
Identify R1 or R2 and the DUT side before selecting a reference connector.
ISO 5356-1 conical context
Identify the cone or socket size and the dimensional or gauging task.
Project-specific method
The device and connector design determine the relevant fixture and equipment discussion.
Standard boundary
Do not combine ISO 80369-2 and ISO 5356-1 into one interface family
Both may appear in respiratory equipment, but they define different connector systems. The DUT connector must be identified before any product recommendation.
Small-bore R1/R2
Cones and sockets
Different gauges
Different fixture paths
Configuration notes
What to confirm before requesting a quotation
A clear connector drawing or sample photograph is particularly important when project terminology does not distinguish a small-bore interface from a cone or socket.
- A respiratory device name does not identify its connector standard by itself.
- Confirm the connector geometry from a drawing or sample when terminology is ambiguous.
- Do not apply a small-bore reference connector to an ISO 5356 conical connection.
Related technical paths
Continue from application context to the right evidence
Technical inquiry
Send enough detail for a useful configuration review
KingPo can review which respiratory connection system applies and then align the reference product, gauge, fixture and measurement equipment.
- Device and application
- Applicable standard and edition
- DUT connector side and geometry
- Drawing, photo or sample information
- Required test behavior
- Fixture and measurement constraints
- Quantity and delivery requirement
- Report or calibration document scope