Chemistry lab filter paper correctly folded

1. Fold the filter paper in half, two times in a row, folded into a 90 ° rounded center angle shape.

2. Take the folded filter paper and open it into a funnel shape with three layers on one side and one layer on the other.

3. The funnel-shaped filter paper into the funnel, the filter paper side should be lower than the funnel side, pour some water into the funnel mouth, so that the soaked filter paper and funnel wall against, and then pour the rest of the water, to be used.

4. will be loaded with filter paper funnel placed in the filter with the funnel frame, (such as iron frame on the ring), in the funnel neck under the admission of filtrate beakers or test tubes, and so that the funnel neck tip against the wall of the admission container.

5. to the funnel into the need to filter the liquid, the right hand holding a beaker, left hand holding a glass rod, the lower end of the glass rod against the funnel three low side of the glass rod, so that the mouth of the cup close to the glass rod, to be filtered liquid along the mouth of the cup, and then along the tilting of the glass rod tendency to flow down into the funnel, the flow of liquid into the funnel, the liquid level can not exceed the height of the filter paper in the funnel.

6. When the liquid through the filter paper, along the funnel neck down, to check whether the liquid along the wall of the cup downstream, injected to the bottom of the cup. Otherwise, you should move the beaker or rotate the funnel, so that the tip of the funnel and the beaker wall is firmly affixed, you can make the liquid along the inside wall of the beaker slowly flow down.