Pipette To Adjust Liquid Level

Take another clean small beaker with your left hand, place the tip of the pipette against the inner wall of the small beaker, keep the small beaker tilted, keep the pipette vertical, and keep the scale line and sight level (the left hand cannot touch the pipette). Slightly loosen the index finger (you can turn the pipette or pipette slightly), so that the solution in the tube slowly flows out from the lower mouth. When the liquid level is about to the mark, press the right index finger tightly, pause for a while, and then press the upper method to remove the solution. Put the bottom line of the meniscus until it is tangent to the edge of the marking line, and immediately press the nozzle with the index finger. Place the tip against the inner wall of the beaker, move it a little to the beaker mouth, and remove the droplets at the tip. Carefully move the pipette or pipette into the container holding the solution.