The selection of the appropriate suction head has a great influence on the accuracy of the final dispenser, so it is best to select the suction head used in the initial calibration of the dispenser, that is, the suction head recommended by the manufacturer. In operation, when the lower end of the sleeve handle of the dispenser enters the suction head, the dispenser can be swayed from side to side for 1 to 2 seconds and gently pressed down; if it is a bulk suction head, gently pressing the suction head in the direction of the dispenser with hand, then turning the suction head slightly for 1 to 2 seconds.
Range Control of Bottle-top Dispenser
Generally speaking, the range of consumption of dispensers is 10 ≤ 100% of the maximum range of liquid shifters. For specific liquid shifters, the accuracy of the liquid shifters decreases with the decrease of the liquid shifters. In general, the best range is 30 ≤ 100% of the maximum range of liquid shifters. In the process of adjusting the range, the principle of from large to small are obeyed in order to eliminate the mechanical error of the liquid shifters themselves.
Generally speaking, the range of consumption of dispensers is 10 ≤ 100% of the maximum range of liquid shifters. For specific liquid shifters, the accuracy of the liquid shifters decreases with the decrease of the liquid shifters. In general, the best range is 30 ≤ 100% of the maximum range of liquid shifters. In the process of adjusting the range, the principle of from large to small are obeyed in order to eliminate the mechanical error of the liquid shifters themselves.
Internal and External Cleaning Method
Proper cleaning methods can maintain a bottle-top dispenser in good condition as long as possible. The following method should be followed strictly: using wet cloth containing soap. Detergent or 60% isopropanol cleaning solution, then removing external dirt from the dispenser, rinsing with double steamed water and drying; if the sample is polluted by mistake, the lower half of the dispenser needs to be removed and operated according to step 1.
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