Pipette Note:
First, note
1, we must choose the appropriate model according to the design capacity of the pipette, the adjustment shall not exceed the round of reading the scope of its nominal capacity.
2, the absorption of the solution should be replaced with different types of suction tip to prevent cross-contamination between samples.
3, a new pipette tip before use suction, discharge solution several times, soaking the suction tip to remove the measurement error.
4, after the non-inverted suction pipette, flat, so the solution into the cavity, damage to the piston.
5, the pipette should not be stored in a dedicated stand, one shall be arbitrarily placed.
6, for a long time or just do not box out of the new pipette should be gently pressed down by hand will push the button several times, then normal use.
Second, the calibration
Pipette calibration before delivery, in general, without requiring you to re-calibration. Necessary, can be easily achieved in the laboratory. Calibration, the room temperature 20 ± 5 ℃ and the preparation of distilled water the same temperature, with a 0.1mg/0.01mg precision analytical balance, a small beaker and other calibration tools.
Pipette adjusted to detect, according to the use, distilled water, distilled water will be discharged to want to weigh the beaker and placed on a weighing scale, continuous operation 6 times and the results should be consistent (see models and technical indicators) to the corresponding values, if one of these beyond a given value, should be re-calibrated until it meets (see models and technical indicators) to complete the calibration value of the work of the pipette.
Third, the following situations not covered under warranty:
Improper use of the internal parts of liquid back and corrosion;
Over rated and screw out the adjustment so that the screw body count caused by damage to the shell;
Suction stroke caused by human faults;
Warranty disassemble.
