How Oxyboss Tests Every Chamber Before Shipment

Every Oxyboss hyperbaric chamber is tested as a complete system before shipment. The test is not performed on separate components or showroom samples, but on the actual unit assigned to the customer’s order — including the chamber body, oxygen source, compression system, control panel, safety valves, tubing, accessories, and packing documents.

Our factory testing process is not just a verbal “quality guarantee.” It is a traceable, recordable, and verifiable pre-shipment standard that buyers can review before final payment.

1. Testing Standard

A hyperbaric oxygen chamber is a pressure-operated system. When purchasing this type of equipment, buyers should not evaluate only appearance, size, and price.

What truly affects long-term use and after-sales cost is chamber sealing, pressure stability, oxygen output, safety valve response, electrical performance, and complete system compatibility. Oxyboss factory testing is built around these key risks.

Our goal is to ensure that every chamber completes a documented full-system verification before leaving the factory.

168-Hour Full-Cycle Individual Testing

Oxyboss applies a strict 168-hour, or 7-day, individual factory testing process. During the 7 days before shipment, each unit must pass basic airtightness testing, high-pressure fatigue cycling, continuous integrated system aging, final inspection, and packing verification.

If any parameter fails to meet the required standard, the unit is returned to the production line for correction and retesting. We do not pass hidden risks on to overseas distributors.

1.15 to 1.3 Times Overpressure Safety Verification

To provide sufficient safety margin, we conduct limit testing above the rated working pressure.

For example, for a hard-shell hyperbaric chamber with a working pressure of 2.0 ATA, we perform continuous pressure-hold monitoring at 2.2 ATA.

We also use professional bubble leak testing in accordance with ASTM-based procedures to verify that the chamber surface, heat-sealed seams, and valve interfaces remain free from micro-leakage under limit-pressure conditions.

Customer-Specific Full-System Linked Testing

We do not rely on isolated component testing. During QC, the actual chamber body, oxygen concentrator, compressor, and control panel assigned to the customer’s order are connected into one complete operating system.

This full-system linked test verifies the electrical and airflow compatibility of all components, helping ensure that the equipment arrives overseas ready for use without accessory mismatch or system incompatibility.

One Unit, One File, Digital Factory Test Report

Each unit has a unique factory serial number. After testing, we archive pressure-hold data, test photos, pressurization videos, and configuration checklists to generate a detailed Factory Test Report in PDF and multimedia formats.

This report is not only a pre-shipment inspection reference for buyers, but also a powerful sales tool for distributors to demonstrate product quality and build trust with local customers.

2. Core Testing Process

Oxyboss factory QC is not a simple visual inspection, nor is it a brief power-on check. We divide the hyperbaric chamber test process into four core stages: pressure and holding test, airtightness and sealing test, safety system response test, and oxygen source and electrical test.

3. Pressure Hold Test

The pressure hold test is a core procedure used by Oxyboss to verify structural strength and system stability. We do not only test whether the chamber can operate at rated pressure. We use overpressure limit testing to help ensure that every chamber is safe and reliable for long-term, high-frequency commercial use.

The unit is connected to the compressor and control system assigned to the order. QC engineers then use high-precision digital pressure transducers to perform overpressure testing. In actual testing, each chamber is pressurized to more than 15% above its maximum working pressure. For example, a hard-shell chamber rated up to 2.0 ATA is tested at 2.2 ATA.

During the pressurization stage, the pressure ramp curve and control valve status are recorded in real time by the testing system. After the chamber reaches the set test pressure, the air supply is shut off and the unit enters a static pressure hold test for no less than 24 hours. During the test period, the pressure decay monitored by the PLC system must be ≤0.01 ATA.

Any pressure drop beyond this precision tolerance is judged as a failed test. If the system detects abnormal pressure fluctuation, minor valve leakage, or mismatch between the control panel reading and test data during pressurization or static holding, the unit is automatically flagged and blocked from shipment.

The chamber is then returned to the assembly area for root-cause analysis and component replacement. After correction, it must repeat the full 24-hour pressure hold cycle and pass the test before it can re-enter the release process.

4. Airtightness and Sealing Test

Airtightness directly determines the safety and stability of a hyperbaric chamber during operation. Oxyboss has established a strict airtightness testing system to perform systematic inspection on both soft-shell and hard-shell chambers under overpressure conditions.

This helps ensure that every unit reaches industrial-level sealing performance before shipment and helps distributors reduce long-term after-sales risks.

Soft Chamber Inspection

For soft-shell chambers, QC engineers focus on the physical characteristics of polymer materials. Key inspection areas include high-frequency welded seams on the TPU fabric, reinforced stress areas, and the double-layer airtight zipper.

Under overpressure conditions, we carefully inspect zipper engagement areas, quick-connect valve bases, and other transition zones between soft and rigid materials where micro-leakage is more likely to occur.

This helps ensure that the soft chamber does not develop abnormal fatigue pinholes during repeated opening, closing, and long-term commercial use.

Hard Chamber Inspection

For hard-shell hyperbaric chambers, the inspection focus is the structural quality of the high-pressure sealing system. Inspection covers medical-grade silicone gaskets on the chamber door, high-transparency viewport sealing pads, all metal weld fusion lines, and pressure-control instrument mounting interfaces.

Any potential micro-leakage caused by assembly gaps is adjusted and corrected before shipment, helping prevent premature sealing degradation after long-distance international transport.

Digital Testing Method

We do not rely on simple visual inspection. Oxyboss combines digital differential pressure transmitters with high-precision pressure decay testing. Under rated overpressure conditions, the pressure drop during a 24-hour continuous pressure hold test must be controlled within ≤0.005 ATA.

We also apply bubble leak testing procedures based on ASTM E515 to inspect key tubing and connection points without blind spots, helping identify and eliminate micro-level slow leakage.

Closed-Loop Retesting

If any micro-leakage point is detected during testing, QC personnel record its physical location and mark it precisely in the one-unit-one-file record. The unit is then sent to the technical department for structural correction. After correction, the chamber cannot move directly to packing.

It must repeat the full 24-hour pressure decay test and airtightness reinspection process until the test data fully meets factory release standards.

5. Safety Response Test

The safety response test is designed to simulate extreme emergency conditions, such as sudden user discomfort or severe anxiety inside the chamber, where immediate exit may be required.

During testing, when the chamber reaches rated working pressure, QC engineers manually trigger the internal and external emergency depressurization devices to verify their mechanical response under pressure.

A qualified emergency pressure relief valve must reduce the chamber pressure to normal atmospheric pressure within 30 to 60 seconds in a smooth and controlled manner, without excessive eardrum pressure noise.

The physical opening resistance of the valve must also remain within a strictly controlled threshold, allowing the user to open the valve with one hand even when weak, stressed, or panicked.

Emergency Panic Depressurization Test

This test verifies whether the emergency pressure release system can be operated quickly and reliably when the user needs to exit the chamber immediately.

QC engineers test the internal and external release mechanisms under working pressure and record the response process, pressure drop behavior, and valve operation status.

The purpose is to ensure that the chamber provides a clear mechanical exit path in emergency conditions, instead of relying only on electronic control.

Sudden Power Failure Self-Protection Test

For commercial operation and home use, unexpected power failure may cause the oxygen generation and compression systems to stop instantly.

To simulate this scenario, Oxyboss performs a sudden power failure self-protection test. While the unit is operating under high-frequency conditions, technicians forcibly cut off the power input to verify the system’s passive safety response without external electricity.

At this point, the system must rely on physical pressure differential to automatically trigger the slow depressurization self-protection valve, allowing chamber pressure to return smoothly to normal atmospheric pressure within 3 to 5 minutes.

This slow release process helps prevent risks caused by sudden system shutdown and helps avoid ear barotrauma caused by rapid pressure drop.

Automatic Overpressure Limiting Test

The automatic overpressure limiting test simulates an extreme electronic system overload failure, such as a control panel sensor malfunction causing the compressor to continue inflating without electronic restriction.

During the test, engineers intentionally bypass the internal electronic protection limit and allow the compressor to continue pressurizing.

This verifies the physical blocking capability of the passive mechanical pressure relief valve. When internal chamber pressure reaches 1.1 times the rated working pressure, the mechanical safety pressure-limiting valve must automatically open and release pressure.

This valve operates physically and does not rely on electronic components or sensors. It serves as the final physical safety barrier to prevent structural overpressure damage, even in the event of mainboard failure or power interruption.

Dual Calibration of Pressure Gauge and Digital Sensor

To prevent safety misjudgment caused by inaccurate pressure readings, Oxyboss performs a strict calibration test between the built-in mechanical pressure gauge and a high-precision digital pressure calibrator before shipment.

During a full pressurization and depressurization cycle, QC engineers compare the chamber’s mechanical pressure gauge with a laboratory-grade digital calibration instrument at multiple pressure points.

The full-range reading deviation must be controlled within ±0.01 ATA. This high-precision physical calibration helps eliminate common quality issues such as display delay, abnormal pointer jumping, or reading deviation, ensuring distributors and end users can obtain accurate pressure data during operation.

6. Oxygen Source and Electrical Test

A hyperbaric oxygen chamber is a complex system. A qualified chamber body is only the foundation. Before shipment, the oxygen source, compression system, airway tubing, and electrical protection devices must pass strict integrated system testing to eliminate potential safety risks in electrical and oxygen-enriched environments.

Oxygen Source Continuous Load Purity Test

The long-term stability of the molecular sieve oxygen generation system is critical. Oxyboss uses a professional ultrasonic oxygen analyzer to perform no less than 24 hours of rated full-load continuous operation testing on the complete oxygen source system.

QC personnel continuously monitor and record flow stability and oxygen purity, ensuring that the system remains within the industrial standard purity range of 93% ±3% during continuous operation. This helps prevent oxygen purity decay caused by compressor temperature rise or long operating cycles.

Integrated Airway Pressure Test

We do not only inspect tubing appearance. We test the sealing performance of the fully integrated system. QC personnel perform reverse pressure load testing on oxygen tubing, high-pressure quick connectors, and valve connection points linked to the chamber body.

This helps ensure that the entire oxygen delivery pipeline remains free from micro-leakage under high-pressure oxygen supply conditions, preventing abnormal local oxygen accumulation outside the chamber.

Electrical Safety and Grounding Protection Test

In oxygen-enriched environments, anti-static and electrical safety performance are critical. Each unit must pass professional electrical safety testing. The test focuses on protective grounding continuity resistance, which should be below 0.1Ω, as well as insulation resistance.

This helps ensure that static electricity can be effectively discharged from the chamber body, reducing static spark risk and keeping leakage current within a safe and compliant range.

Voltage Compatibility and Grid Fluctuation Tolerance Test

For export orders to different countries and regions, such as 110V, 220V, or 240V markets, Oxyboss verifies the equipment nameplate and plug specification three times before dispatch.

More importantly, we use a variable-frequency power supply to simulate ±10% voltage fluctuation in the target market. This allows us to test the startup performance and protection logic of the compressor and control system under unstable voltage conditions, helping ensure stable long-term operation in the local power grid environment.

7. One Unit, One File

For distributors and project buyers, the real value is not simply being told that a unit has “passed testing.” What matters is that every unit has its own corresponding test record, order configuration, and shipment documentation.

Oxyboss can create a test file for each order, so buyers receive not only a traceable device, but also a complete set of delivery documents that can support sales, inspection, and after-sales service.

Serial Traceability

Each unit can be linked to a unique serial number, order number, or batch identification record. Distributors can use this information to trace the equipment model, configuration, test record, shipment date, and after-sales communication history.

Report Content

The Factory Test Report can include model information, order configuration, test date, test items, test results, QC records, and shipment confirmation details. For OEM or project orders, customized QC file formats can be discussed in advance.

Sales Support

Distributors can use the test report as a local sales communication tool. It helps explain to customers that the equipment has completed pressure, airtightness, safety, oxygen source, and electrical checks before shipment, increasing trust during the local sales process.

After-Sales Reference

If maintenance, spare parts replacement, or technical support is needed later, the serial number and test record can help technical personnel confirm the original configuration and factory condition more efficiently, reducing communication costs.

8. QC Documentation Support

Oxyboss can provide pre-shipment QC documentation based on the order. For bulk purchases, OEM projects, long-term partners, or buyers with internal inspection procedures, these materials can serve as a basis for final payment confirmation and shipment approval.

Test Report

The report may include pressure testing, airtightness testing, safety system inspection, oxygen source inspection, electrical testing, appearance review, accessory check, and packing confirmation. Report format can be discussed in advance according to order requirements.

Real Product Photos

We can provide photos of the chamber body, pressure display, control panel, oxygen source, accessory checklist, serial number label, customized logo, packing status, and shipping marks.

Operation Video

Upon request, we can provide equipment operation videos, such as the pressurization process, control panel display, safety valve operation, oxygen source operation, tubing connection, and pre-packing confirmation.

Configuration Checklist

The checklist is used to confirm whether the model, pressure specification, voltage, color, logo, accessory combination, manual language, packing method, and other customized items match the order.

Packing Confirmation

Before shipment, we can provide packing photos, including inner protection, outer carton or wooden case, accessory placement, shipping marks, and dispatch labels, helping buyers confirm product status before logistics handover.

9. Request QC Documentation

If you are evaluating Oxyboss hyperbaric chambers or need to understand our factory testing process, we can provide QC report samples, testing process documentation, pre-shipment confirmation materials, and related video examples.

Please submit your target model, purchase quantity, destination country, customization requirements, and whether you have internal inspection requirements.

We will provide the corresponding documentation based on your project. Request QC Report Sample | Get Testing Video Examples | Ask About Third-Party Inspection

‍