Why do air tightness test? Because many products need to be waterproof, or need to prevent gas from entering and leaking, airtightness testing needs to be done to ensure the quality of the product. The original simple way is to put the product into the water and see if there are bubbles in the product, so as to realize the waterproof test. The shortcomings of this method are very obvious, that is because many products cannot be wetted with water, or even if they can be wetted with water, the products need to be dried and cause secondary pollution. More time-consuming and laborious, unscientific, not objective, and not suitable for batch testing! Now we have two scientific and popular airtightness test methods: direct pressure airtightness test and differential pressure airtightness tester. The principles of the two methods are essentially the same, and air is used instead of water. . Collect the changes of the air tightness tester parameters to calculate the specific leakage value, and then determine whether the product is qualified by the leakage value. So as to achieve waterproof test, air tightness test.

This method does not damage the product, and the operation is also very simple. Most manufacturers are already using this method. And received unanimous praise from everyone!