There are many brands of pipette controllers with names such as Pipet-Aid, FastPette, Accu-jet pro, S1 Pipet Filler, Easypet, etc. These are simple instruments with two functions: aspiration and dispensing. How much sample to take-up or push-out is controlled by your finger and there is no calibration adjustments on these units. The glass or plastic pipette tube has graduated marks imprinted on them for the direct aspiration, dispensing, and transferring of liquids. There is no need to calibrate these units.
The top three issues that these instruments face are:
Clogged filter:
Pipette controllers all use a special filter designed to block any liquid. If a user holds the trigger longer than needed and the sample aspirates beyond the capacity of the pipette tube, the filter shuts the entrance off to prevent the sample from entering the mechanical chamber and damage the instrument. Install a new filter to solve this problem.
Dead battery:
Replace the battery if it will not recharge or hold a charge. Use the manufacturer’s wall power supply for best results and battery life.
Dislocated internal tubing / hoses:
Trauma to the controller, such as a fall, can cause one or more of the internal tubing ends to become dislodged. Hoses are also susceptible to cracking. These issues are indicated when the instrument appears working when the trigger is pulled, but no sample is aspirated. This repair should be entrusted to a service person to ensure proper evaluation and reassembly.
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