Pipette Cleaning Instrument

First rinse with tap water, then soak with chromic acid detergent. The operation method is as follows: hold the pipette or the upper end of the pipette with the right hand, the index finger is close to the upper mouth of the pipe, the middle finger and ring finger are open to hold the outside of the pipette, The thumb is held inside the pipette between the middle finger and the ring finger, and the little finger is naturally relaxed; the ear washing ball is held in the left hand, and the fist is held, the suction ball is held in the palm, and the tip is downward, and the suction ball is clenched tightly and discharged from the ball. To remove the air, insert the tip of the suction ear bulb into or close to the top of the pipette (pipette), taking care not to leak air. Slowly loosen the fingers of the left hand, slowly suck the washing liquid into the tube until the part above the mark, remove the suction ear ball, quickly block the upper mouth of the pipette (pipette) with the index finger of the right hand, wait for a while, put the washing Put the liquid back into the original bottle. Rinse the inner and outer walls of the pipette (pipette) with tap water until no water droplets hang on it, then wash with distilled water 3 times, and control the dry water for use.