The acceptance criteria for 90mm diameter glass filters typically include inspections of materials, appearance, dimensions, performance, packaging, and other aspects to ensure compliance with design requirements and usage standards. The following are common acceptance criteria:
1. Material and process acceptance
Material confirmation: Check if the material of the glass filter meets the requirements, usually borosilicate glass (such as Borosil) that is resistant to chemical corrosion and has sufficient heat resistance and impact resistance.
Surface quality: The surface of the filter should be free of defects such as bubbles, cracks, and flaws, and the surface should be smooth to avoid affecting the filtration process.
Processing technology: Confirm whether the processing technology of the glass filter is qualified, and the edges should be smooth and free of burrs to avoid damage or injury to operators during use.
2. Size and shape acceptance
Diameter testing: Use calipers or other precision measuring tools to check if the diameter of the filter is 90 millimeters, ensuring compliance with design requirements.
Thickness detection: Check whether the thickness of the glass filter meets the standard. Usually, the thickness of the filter is required to be moderate, ensuring both strength and not affecting the filtration speed due to excessive thickness.
Flatness and symmetry: Ensure the flatness and symmetry of the filter, especially at the bottom and outer edges, to avoid irregular shapes affecting its use.
3. Physical performance acceptance
Strength test: Verify whether the filter can withstand the specified pressure difference through pressure testing. Usually, a certain amount of pressure can be applied during testing to ensure that the glass filter does not rupture.
Heat resistance test: Check if the filter has sufficient heat resistance to withstand the high temperature environment that may occur during the experiment. This test can verify its temperature resistance through heating equipment, requiring the glass filter to withstand a temperature of at least 400 ° C.
Impact resistance test: Conduct a slight impact test on the filter to check if it can remain intact and undamaged under a certain degree of impact, avoiding damage caused by external forces during transportation and use.
4. Filter performance acceptance
Filtration efficiency test: Conduct filtration experiments to verify the filtering effect of the filter and confirm its ability to effectively remove the particulate matter required by the design. Usually, tests use particles of specific sizes for filtration, requiring filtration efficiency to meet design standards.
Flow rate test: Check if the flow rate of the filter meets the requirements, ensuring that the filter can maintain an appropriate flow rate without affecting filtration efficiency or causing liquid overflow due to excessive flow rate.
5. Safety and sealing acceptance
Sealing test: For filters that need to be connected to other devices, check the sealing of their interface parts. By installing the interface and applying pressure, ensure that no liquid leakage occurs.
Edge safety inspection: Check whether the edges of the glass filter have been specially treated to ensure smooth edges and avoid sharp edges causing damage to operators or equipment.
6. Appearance and identification acceptance
Appearance inspection: Check whether the appearance of the glass filter is intact, without obvious cracks, damages, defects, etc.
Integrity of identification: Check whether the identification on the filter is complete and clear, including product name, material, production date, model and other information, for later traceability and use.
7. Packaging acceptance
Packaging integrity: Check if the packaging materials are intact and if the filters are properly protected to prevent damage during transportation. The packaging should have functions such as shock resistance, moisture resistance, and pressure resistance.
Labels and instructions: Check if there are clear labels on each packaging box, indicating the manufacturer, product specifications, instructions for use, and precautions.
8. Certificate of Conformity
Quality certificate: Each batch of glass filters should be accompanied by a certificate of conformity at the time of leaving the factory, indicating that they comply with relevant technical standards and quality requirements.
Testing report: If necessary, relevant testing reports or certifications must be provided to prove that the product meets performance and safety requirements.
summary
The acceptance criteria for 90mm diameter glass filters aim to ensure that their material, size, strength, filtration effect, safety, etc. meet the specified requirements. By rigorously testing and inspecting every technical indicator, we ensure that the product can provide reliable filtering effects in actual use, and guarantee safety and convenience during use.