Use of Lab Filtration Vacuum Apparatus

Lab filtration vacuum apparatus is an instrument used for vacuum filtration in laboratory. In general, filtration can serve the purpose of retaining particulate matter, clarifying filtrate, sterilizing, solid-liquid separation, degassing, defoaming and so on.

Lab filtration vacuum apparatus uses a filter membrane in the middle of the suction filter bottle. The filter membrane divides the suction filter bottle into upper and lower parts. The upper part contains the liquid to be filtered and the lower part contains the filtered filtrate.

Because the filter membrane will pass the liquid. There is great resistance, which causes the filtration speed to slow down or the liquid cannot pass through effectively, so the so-called vacuum suction filtration is to connect the suction filter bottle to the lab filtration vacuum pump, reduce the vacuum degree of the bottle body under the filter membrane, and let outside air push the sample into the filter cup.

Therefore, lab filtration vacuum apparatus is a relatively complete system, composed of multiple components, and the lack of any one part will affect the normal use of the instrument.

Stainless Steel One Branch Vacuum Filtrations

The following uses lab filtration vacuum apparatus as an example to briefly introduce each component and its role:

1.Lab filtration vacuum pump:
Equipped with vacuum suction filter pump, the pump is a dry lab filtration vacuum pump that can be used directly after connecting the power supply. The suction end of the suction filter pump is equipped with a vacuum adjustment valve. The vacuum adjustment valve is equipped with a vacuum meter to facilitate the observation of the working state of the instrument and adjust the pressure and pumping speed as required.

Many customers will consult when purchasing a filtration device that they must purchase a lab filtration vacuum pump. Due to the small pore size of the filter membrane, filter paper, filter cloth or filter screen, it will cause great resistance to the passage of liquid, causing the liquid to fail to pass through the filter membrane effectively.

The suction filter pump can form a pressure difference between the suction bottle and the outside, so that the outside air quickly pushes the filtrate through the filter membrane. Without using the lab filtration vacuum pump, the liquid can only naturally penetrate the filter membrane and drop into the collection bottle. So the suction filter pump is a must-have.


2. Filter cup:
It is more convenient to select the cup with scale as far as possible to hold the liquid with filter.

3. Automatic suction cup cover:
The user only needs to use a hose to connect one end to the automatic liquid inlet, and the other end is put into the filtrate to be filtered. After the switch is turned on, the filtrate is automatically sucked into the filter cup to start filtering, no need to manually pour It is easy to operate when loading samples.

4. Filter membrane placement base:
Used to prevent the filter membrane, generally requires a flat surface, will not scratch the filter membrane, and the filter cup connection is as simple as possible, without the use of clamps or fixtures.

5. Suction filter bottle:
Used to hold filtrate or waste liquid after the end of filtration. The bottom of the suction filter bottle of the lab filtration vacuum apparatus is designed with a quick liquid discharge port. After the filtration is completed, there is no need to remove the suction filter bottle and then the filtrate is poured out. Only need to loosen the clamp of the bottom liquid distribution port to quickly discharge the liquid, and even change drain with suction. Improve efficiency and easy operation.

6. Fixing seat
Stabilize the suction filter bottle to avoid misoperation or accidental shaking to make the suction filter bottle fall.

7. Filter membrane
It is equipped with filter membranes with different pore diameters, but users can also choose filter membranes with appropriate pore diameters and materials according to their own needs. The pore diameters and materials are not affected by the filter device, and are selected according to customer experimental needs.

8.Water blocking protector:
Built-in polytetrafluoroethylene hydrophobic membrane, can block the liquid sucked up 100%.