Send Email
Skype
whatsapp
0102030405
Air Bubble Tester for BOPET Film Disc - Quality Assurance by Leading China Suppliers and Factory
Impregnation of a test piece (Disc filter) with a test liquid. Immersion of the test piece in the test liquid and introduction of a gas (usually air) into the test piece at gradually increasing pressure. Determination of the pressure at which bubbles are emitted from the surface of the test piece. Evaluation of the equivalent bubble test pore size by means of a mathematical formula.
Bubble test pore size:
The maximum equivalent capillary diameter in the test piece which is calculated from the measured minimum pressure required to force the first bubble of gas through the test piece (under standardized conditions) impregnated with a liquid.
Application
Quality Detection
Used as factory-entry quality detection for new disc filter.
Damage Assessment
After the disc filter is used, detect whether it is damaged.
Test Indicators
1. First bubble point
The bubble test pore size corresponds to the minimum differential pressure at which constant bubbling first occurs.
2. Uniformity of distribution of pores
These particular definitions should be agreed between the supplier and the user. Moreover, the uniformity of distribution of pores approaching the maximum pore size may be observed by gradually increasing the gas pressure. Cracks and clogged areas are easily discerned by this operation.
Model: BPT-B Specifications
| Parameter | Specification Details |
|---|---|
| Test Object | Disc Filter: φ177.8 - 306mm (Agreement made with φ305mm as sample example) |
| Filtering Accuracy | 5 - 60um (Accuracy of 40um disc filter used as sample example) |
Technology Performance
- The disc filter is pressed securely by a cylinder mechanism.
- Digital display dynamically shows the bubble pressure and flow.
- Automatic air exhaust device avoids environmental pollution caused by IPA volatilization.
- Equipped with IPA circulation filtration to extend overall IPA usage time.
- Visual sliding door design makes real-time observation more convenient.
- Storage tank automatically collects and returns the test liquid after testing is complete.
Frequently Asked Questions
What is the bubble test pore size?
It is the maximum equivalent capillary diameter in a test piece calculated from the measured minimum pressure required to force the first bubble of gas through the test piece (under standardized conditions) impregnated with a liquid.
What are the primary applications of this test?
This test is primarily used as a factory-entry quality detection method for new disc filters, and to evaluate whether a disc filter has suffered damage after it has been used.
How is the first bubble point defined?
The first bubble point corresponds to the minimum differential pressure at which constant bubbling first occurs on the surface of the test piece.
How can you evaluate the uniformity of pore distribution?
By gradually increasing the gas pressure, you can observe pores approaching the maximum pore size. This operation makes it easy to discern cracks and clogged areas. The specific definitions for uniformity should be agreed upon between the supplier and the user.
What test object sizes and accuracies does Model BPT-B support?
Model BPT-B supports disc filters with diameters ranging from φ177.8mm to 306mm, and a filtering accuracy from 5um to 60um. (e.g., tested with a φ305mm, 40um disc filter).
How does Model BPT-B handle test liquids and environmental protection?
The equipment is equipped with an automatic air exhaust device to avoid environmental pollution from IPA volatilization. It also features circulation filtration to extend IPA usage time, and a storage tank that automatically collects the test liquid back once the test is completed.