Laboratory professional instrument large volume manual pipetting disinfection transfer pipette pump

Precautions for pipette operation

(1) the thumb must be released slowly and smoothly when drawing liquid, and it is never allowed to be released suddenly, in case that the solution is inhaled too quickly and then flushed into the liquid extractor to erode the plunger and cause air leakage.

(2) in order to obtain a higher accuracy, the suction head needs to absorb the sample solution in advance, and then the formal pipette, because when absorbing the serum protein solution or organic solvent, the inner wall of the suction head will remain a layer of “liquid film”, resulting in a small amount of drainage error.

(3) the liquid with high concentration and viscosity will produce errors. In order to eliminate the error, the compensation amount can be determined by the test. The compensation amount can be set by adjusting the knob to change the reading of the reading window.

(4) the analytical balance can be used to weigh and calculate the weight of the pure water taken to correct the liquid extractor. The weight of 1ml distilled water at 20℃ is 0.9982g.

(5) the method that the pipette repeatedly impinges on the suction head to tighten is very undesirable. Long-term operation will loose the internal parts and damage the pipette.

(6) when the pipette is not equipped with suction head, do not remove the liquid.

(7) When setting the range, please pay attention to rotating to the required range.The numbers are clear in the display window.Do not turn the button out of the range when the set range is within the range of the pipette, otherwise it will jam the mechanical device. Damage to the pipette.(7) When setting the range, please pay attention to rotating to the required range.The numbers are clear in the display window.Do not turn the button out of the range when the set range is within the range of the pipette, otherwise it will jam the mechanical device. Damage to the pipette.

(8) the pipeter is prohibited to absorb highly volatile and corrosive liquids (such as concentrated acid, concentrated alkali, organic matter, etc.).

(9) it is strictly prohibited to use pipette to blow the mixed liquid.

(10) do not use a large range pipette to remove a small volume of liquid, so as not to affect the accuracy.At the same time, if you need to remove a large amount of liquid outside the range, please use pipette for operation.