Meaning
International standardized specifications describe the principles and procedures of tracer gas leak detection for a wide variety of industrial hardware. The protocols of iso 20485 leak testing establish the criteria for selecting, calibrating and operating vacuum or pressurization systems using tracer gases to find minuscule leak paths. This methodology defines the absolute limits of detection for different test setups, ensuring that quality control measurements are reproducible across different testing facilities worldwide.
Adherence to this framework ensures that battery cells or other sealed enclosures meet the rigorous hermeticity requirements necessary for long-term chemical stability.
Procedural Execution
Practical application of this standard requires a systematic sequence of calibration and vacuum stages. When conducting iso 20485 leak testing, technicians calibrate the detector using a reference leak source with a known tracer gas flow. The test object is then either evacuated or pressurized with the tracer gas depending on the chosen test configuration.
Measuring the rate of gas migration through the boundary walls provides a direct, quantitative measure of the seal quality.
Technical Specification
Sourcing contracts often specify precise leak rate limits that must be verified using these standardized methods. The requirements of iso 20485 leak testing ensure that any micro-pores or weld defects in battery housings are identified before the cells are integrated into packs. This prevents early degradation from solvent evaporation or humidity penetration during field operation.
This test standard establishes the scientific foundation for all quantitative leak measurements in battery manufacturing.
Procurement Value
Quality assurance in cell supply chains relies heavily on standardized, auditable metrics. Utilizing iso 20485 leak testing allows sourcing departments to compare the sealing quality of different cell vendors.
