1. Standard Joint: Conforms to standards and has excellent sealing property.
2. High Borosilicate Glass: Withstands high temperatures, has high transparency, and is robust and durable.
3. Pagoda Head: Featuring multiple hoops, distinct edges and corners, and firm connection that is not prone to detachment.
4. Lathe-assisted, Firmly Welded: Welded at 1100°C, subjected to stress relief at 600°C, and naturally cooled with heat preservation in the furnace.
5. The apertures are uniform, the welding is firm, and the glass plate is perforated by laser.

Working Environment Conditions:
1. Temperature range: From normal temperature to 180°C. Abrupt temperature variations should be avoided to prevent cracking.
2. Pressure requirements: The positive and negative pressure differential should not exceed 9.8×10⁴ Pa (approximately 1 kg/cm²) to avoid damage to the filter plate caused by excessive pressure.
3. Chemical environment: The high borosilicate glass material is resistant to acids and alkalis; however, it is not applicable for hydrofluoric acid, hot concentrated phosphoric acid, and concentrated alkaline solutions.
4. Usage environment: It needs to be utilized in a dry and clean setting to evade dust contamination and dampness.

Precautions:
1. Select the Appropriate Filter Plate Aperture: Select filter plates with different pore sizes of G0 to G6 based on the experimental requirements to ensure the filtering effect.
2. Timely Cleaning: Immediately soak in dilute acid or detergent solution after use, and then rinse with distilled water to prevent clogging.
3. Handle with Care: Avoid collisions or drops to prevent damage to the funnel.
4. Regular Inspection: Inspect whether the filter plate is clogged or damaged before use to ensure the normal operation of the funnel.
5. Disinfection and Storage: G5 and G6 filter plates can be used for bacterial filtration. After use, they need to be filtered with an acidic solution and dried for storage.