Introduction: Before testing with the BQS-40 filter integrity tester, it is necessary to ensure that the test filter material has been completely soaked. The general method of manual infiltration is to put the filter material into the infiltration solution and fully immerse it for about 20 minutes. Every 3 minutes, lift the filter material to remove bubbles and allow atmospheric pressure to penetrate the membrane pores. The product wetting solution does not refer to water, nor is it a product or process fluid, but rather to a solvent. The integrity test results of the same filter material may differ after product wetting, and the reason for their differences is that the surface tension coefficient of the wetting solution is different. The solubility and diffusion ability of gases tested in diffusion flow can also lead to inconsistent test results. For this system, the recommended wetting solution is a mixture of fluorocarbons, anhydrous ethanol, or 60% isopropanol and water. Due to the molecular attraction of interfacial tension, the infiltrating liquid is firmly locked in the microporous gaps of the filtering material. When the gas pressure on the high-pressure side of the sample is greater than the capillary pressure and surface tension inside the sample membrane pore, it is released from the other side of the sample. The wetting liquid in the capillary pores will be pressed out to the low-pressure side of the sample by the gas pressure. At this time, the pressure on the high-pressure side of the sample is considered as the bubble point pressure, and the phenomenon should be a series of continuous bubbles appearing in the sample. Technical parameters: Power supply/power: 170-240V AC, 50/60Hz; 100W Operating pressure: 7999 mbar Intake pressure: 3000 mbar External dimensions: 500 (length) x 200 (width) x 180 (height) Test pressure: 500-6900mbar Sensitivity: ± 1.0 mbar Bubble point: ± 60 mbar; Environmental temperature: 0 ℃~+50 ℃; Relative humidity: 10-80% Basic bubble point test: 2 minutes ± 2 minutes; Diffusion flow test: 7 ± 2 minutes; Water immersion flow rate test: 7 ± 2 minutes; System airtightness: 3 ± 1 minute; Printing function: Chinese/English printing, printing test conditions, test results, and test curves; History recording function: 32GB storage space, saving 1 million pieces of data Display screen size: 5.7 inches; 32-bit; touch screen Language options: Chinese/English
Introduction: Before testing with the BQS-40 filter integrity tester, it is necessary to ensure that the test filter material has been completely soaked. The general method of manual infiltration is to put the filter material into the infiltration solution and fully immerse it for about 20 minutes. Every 3 minutes, lift the filter material to remove bubbles and allow atmospheric pressure to penetrate the membrane pores. The product wetting solution does not refer to water, nor is it a product or process fluid, but rather to a solvent. The integrity test results of the same filter material may differ after product wetting, and the reason for their differences is that the surface tension coefficient of the wetting solution is different. The solubility and diffusion ability of gases tested in diffusion flow can also lead to inconsistent test results. For this system, the recommended wetting solution is a mixture of fluorocarbons, anhydrous ethanol, or 60% isopropanol and water. Due to the molecular attraction of interfacial tension, the infiltrating liquid is firmly locked in the microporous gaps of the filtering material. When the gas pressure on the high-pressure side of the sample is greater than the capillary pressure and surface tension inside the sample membrane pore, it is released from the other side of the sample. The wetting liquid in the capillary pores will be pressed out to the low-pressure side of the sample by the gas pressure. At this time, the pressure on the high-pressure side of the sample is considered as the bubble point pressure, and the phenomenon should be a series of continuous bubbles appearing in the sample.
