Operation steps of electric pipette:
1. Firstly, use a wiping paper dipped in a small amount of 75% alcohol to wipe the surface of the electric high-capacity pipette;
2. Choose a pipette of appropriate size, open the package from the top, and only touch the part above the scale line with your hand;
3. Insert the pipette correctly into the cone connector of the electric high-capacity pipette, and then remove the remaining pipette packaging;
4. Open the lid of the container for the liquid to be transferred, keep the pipette vertically inserted below the liquid level, and press the suction button to suck the liquid;
5. Measure the volume of liquid to be transferred using the scale line on the wall of the pipette;
6. After the liquid aspiration is completed, release the aspiration button, rub the pipette against the inner wall of the test tube, and then remove the pipette from the container;
7. Hold the pipette vertically and place it against the inner wall of the container. Press the drain button carefully to release the liquid;
8.After the liquid transfer is completed, correctly remove the liquid tube and handle it properly.
Precautions for using electric pipette：
Glass pipettes are fragile items that may cause serious cuts when broken, so there is no need to insert them forcefully;
When suctioning, the scale at the bottom of the half moon shaped liquid surface should be read, not the top of the liquid surface;
When sucking or draining a large amount of liquid, you can use force to press the suction button or select a high gear speed to increase the pipetting speed; When using a small volume pipette, it is necessary to gently apply force and use a slow speed to avoid the liquid from being sucked into the top of the pipette and contaminating the membrane filter and sample;
When there is solution in the pipette, do not tilt the pipette to prevent liquid from entering the top of the pipette and contaminating the membrane filter and sample;
Do not touch any unsterilized surface with the lower end of the pipette to prevent contamination;
Do not touch the lower end of the pipette that has been immersed in the liquid surface to prevent corrosive or toxic liquids from harming the experimenters;
Before handling organic solvents or corrosive chemicals, the chemical resistance must be checked, and only liquids with volatile vapors that will not corrode the materials used can be used;
When the membrane filter is missing or damaged, pipetting can cause equipment damage. Do not use suction aids without installing the membrane filter, and replace the damaged membrane filter in a timely manner;
Electric high-capacity pipettes commonly used in laboratories should be cleaned and stored regularly.
