When using negative pressure to measure the tightness of bottle cap, use bottle embryo or bottle
The clamping head method uses the bottle mouth, whether it is a bottle embryo or a bottle, and cuts the bottle mouth test.
Usually it is better to use a bottle, because the bottle is blown from the bottle to the bottle, and the mouth of the bottle may have some defects such as scratching and deformation in theory, so it will be relatively close to the actual situation.
Measure the tightness of bottle cap with negative pressure tester. Isn't it negative pressure gauge? Usually bottle cap tightness tester.There are usually two ways to test the tightness of a bottle cap: the clamping head method and the pin insertion method.
