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November 2025

Illustration - Air Tightness Testing Station

Q&A: What type of job is an airtightness testing position? An article to clarify the job attributes and development direction

This article describes the airtightness testing engineer position and emphasizes its importance. The work includes testing product airtightness, setting standards, managing equipment, handling exceptions, etc., which requires the ability of physical understanding, equipment operation and data analysis. The working environment is good, and the salary and promotion direction is clear. In the future, the position will be upgraded with the help of new technology, and practitioners need to become compound talents.

7. Positive & Negative Pressure Air Leak Tester

Why do some products have to measure the negative pressure after measuring the positive pressure? Precision Industrial Technology tells you the truth!

This paper introduces the importance of positive and negative pressure airtightness testing. Positive and negative pressure test can complement the detection of sealing defects of products in different working conditions, simulate the real use of the environment, enhance the stability of waterproof grade, reduce the false detection rate. Precision Engineering JC-HH100 positive and negative pressure airtightness instrument with positive and negative pressure two kinds of ability to support the pressure drop and leakage rate of two kinds of determination, can simulate the real use of the scene, applicable to R & D verification, mass production sampling or full inspection, reduce enterprise costs.

Cylindrical Lithium Battery

Q&A: How to do hermeticity test and burst test for cylindrical lithium batteries? A clear article

This article introduces the two core tests of cylindrical lithium battery: air tightness test and burst test. The airtightness test accurately detects whether the battery seal is leaking through minimally invasive drilling, professional fixture system, pressure application and monitoring, etc. The burst test monitors the pressure resistance limit and rupture mode of the shell by slowly and uniformly increasing the pressure. With the advantages of integrated airtightness + bursting, one machine with multiple molds, high pressure capability, and accurate and stable results, Precision Tech's solution is suitable for the R&D and mass production of automotive-grade and power storage batteries.

IPXX Protection Rating Chart_Cover

How much kPa is measured by IP protection level and how to set the parameters of the air tightness tester?

This paper introduces the method of setting airtightness test parameters for IP66 to IP69 protection classes, including test pressure, instrument recommendation, test duration, etc. It also describes the method of defining test parameters and the four phases of establishing enterprise IP airtightness test standards, emphasizing that parameter settings need to be based on data-based decision-making and continuous optimization.

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