How to use the solvent filter
1. Before use, it is necessary to know whether the filter material has an influence on the filter membrane. Select the filter membrane of the corresponding material according to the type of filter material (see chemical compatibility table).
2. Before use, choose the membrane aperture you need according to your process requirements.
3. The filter membrane is washed with distilled water before use, then immersed in water at 70 °C ~ 80 °C for 4 hours, or soaked in normal temperature distilled water for 12 hours.
4. Clean the filter (stainless steel filter can be washed with distilled water, glass solvent filter without filter)
Filter with n-hexane or petroleum ether and rinse with distilled water.)
5. Place the soaked filter in the middle of the filter support mesh or glass sand filter.
6. Press the filter with a filter funnel.
7. Clamp the anodized aluminum spring clips to the upper and lower flange sides.
8. Put the whole filter into the disinfection pressure cooker and steam autoclave (121 °C, 30 minutes), or use other methods. When hot-pressing, avoid direct steam unidirectionally on the filter membrane and prevent the vapor from condensing to produce negative pressure and damage the membrane.
9. Check whether the filter membrane is pressed after disinfection.
10. Turn on the vacuum pump power supply and press the power switch. At this time, there should be the running sound of the air pump. When you touch the air pump on the air pump by hand, you should feel the pumping effect. Look at the pressure gauge to show normal, indicating that the vacuum pump is running normally.
11. Turn off the power and turn the regulator’s pressure knob fully open.
12. Connect the filter and vacuum pump with the rubber hose.
13. Pour the medium to be filtered into the filter bowl, taking care not to be too full.
14. Press the power switch and adjust the pressure regulator knob of the pressure reducer to achieve the required vacuum pressure.
15. After filtering, turn off the power switch.
16. Turn on the pressure regulator knob of the pressure reducer until the pressure inside the filter returns to normal pressure (ie, the pressure gauge returns to zero), and then separate the pump and the filter connecting conduit.
17. After use, remove the filter and thoroughly clean and dry the filter with pure water for the next use.