Pipette tip cleaning tips
As one of the routine laboratory instruments, the pipette has a great influence on the accuracy of the experimental results. Therefore, we tend to pay more attention to the cleaning and disinfection of the pipette. Lebe is here to share with you the cleaning tips of IKA pipettes .
When our laboratory staff conduct quantitative analysis experiments, even a small amount of impurities will affect the accuracy of the experiment. At this point we can use the lotion to clean the IKA pipette . The wash solution is a saturated solution of potassium dichromate in concentrated sulfuric acid. (
The washing liquid has strong decontamination ability. When washing, the washing liquid is added into the container in an amount of 1/3 of the total volume of the container. Then the container is tilted, and the container is slowly rotated to make the inner wall of the container wet with the washing liquid. Then, pour the washing liquid into the original bottle, and then wash the washing liquid with water. If you can soak the container with a lotion for a while or heat it up, the effect will be better.
We also pay attention to the following points when cleaning the IKA pipette with lotion :
        1 It is best to wash the container with water or detergent before using the lotion.
　　 2 Try to remove the water from the container before using the lotion to avoid diluting the lotion.
　　 3 After washing, it should be poured back into the original bottle, and the lotion can be reused.
　　 4 Do not use washing liquid to wash reductive dirt ( such as certain organic matter ) , which can reduce potassium dichromate in the washing liquid to chromium sulfate ( the color of the washing liquid will change from the original dark brown color). Green ) ; The lotion that has turned green cannot be used any more.
　　 5 The lotion is very corrosive and can burn the skin and damage the clothes. Be careful when using it. If you accidentally spill the lotion on your skin, clothing, and lab table, rinse immediately with water.
　　 6 Because potassium dichromate is seriously polluting the environment, it should be used as little as possible. The container washed by the above method is also washed with water to remove the detergent. It was washed three times with distilled water.
The principle of a small number of times should be met when washing the container. It saves both efficiency and efficiency. Wiping the washed container with cloth or paper not only does not make the container clean, but instead leaves the fiber on the wall and stains the container.
Insoluble or oily soil should not be attached to the wall of the cleaned container. Such walls can be completely wetted by water. When checking whether it is washed, turn the container upside down, the water will flow down the wall, leaving only a thin and uniform water film on the wall, instead of water drops; if there is water drops, it will not be washed. net.
YT-88
YT-88
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