The Pipette Picks Up The Solution

Shake the solution to be absorbed, pour a small part of the solution to be absorbed into a small beaker that is washed and dried, use filter paper to absorb the water inside and outside the cleaned pipette tip, and insert it into the small beaker to absorb the solution. When sucking up to 1/3 of the pipette capacity, immediately press the mouth of the pipette with your right index finger, take it out, hold and turn the pipette horizontally, so that the solution flows all over the inner wall of the pipette, and the solution is discharged from the lower tip into the waste liquid inside the cup. In this way, the solution can be absorbed after rinsing 3-4 times.

Insert the pipette rinsed with the liquid to be aspirated into 1-2cm below the surface to be aspirated, and use the suction ear ball to absorb the solution according to the above operation method (note that the pipette should not be inserted too deep into the solution, and it should be sucked down while sucking). insert, always at this depth). When the liquid level in the tube rises to about 1-2cm above the marking line, quickly block the mouth of the tube with your right index finger (if the solution falls below the standard line at this time, it should be sucked again), and lift the pipette out of the surface to be suctioned. Make the tip of the tube touch the inner wall of the container to be aspirated for a while and then lift it up, and use filter paper to dry off a small amount of solution adhering to the lower end of the pipette or pipette. (When moving the pipette or pipette, the pipette or pipette should be kept vertical and cannot be tilted)