Pipetman Calibration Troubleshooting: Printable Calibration LogPrintable Calibration Stickers (for use with Avery 5960 labels) Before any Pipetman calibration adjustments are made, the seal, o-ring, shaft, piston, and pipette tip performance needs to be confirmed as being good and fully functional. These five (5) components account for 95% of all pipette performance issues with accuracy and precision
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Electronic Pipette Error Message All motorized electronic pipettes have an onboard program to control the performance of each pipetting action. An error message on the display means that the pipette has not been able to perform the attempted action properly. It could be due to an unfit component, like the tip, or the incorrect action
What is a Reducing Tube? In some models/sizes of Eppendorf pipettes, a reducing tube, also known as “filling tube”, is used to regulate air flow. It is used in pipettes where the ratio between the shaft orifice and the piston diameter is such that, during aspiration of the liquid, a turbulence will be created in
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PipetteSupplies.com stocks both Teflon and Polyethylene piston seals. Polyethylene Pipetman seals are the most popular option and are injection molded. Teflon Pipetman seals are machine molded. Polyethylene seals have tighter tolerances; Teflon seals are more pliable, and tighter. Both seals are autoclavable once and have about the same durability. Related Posts: Pipette Parts – Life Span,
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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
In some situations (note the following exception), it is only necessary to verify the accuracy of one channel. The exception being critical experiments where regulatory agencies mandate that all channels must be gravimetrically evaluated (using correct equipment and procedures) and accuracy and precision properly documented. All channels in a multichannel pipette are driven by a
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Have you ever been frustrated by non-linear volume readings at different volume settings after inspection, cleaning, or preventive maintenance? For example, let’s say you’ve completed the initial pipette evaluation steps: pipette inspection, cleaning, preventive maintenance, lubrication of parts as per manufacturer’s recommendations, and replacing wearable components (seal, o-ring, etc.). The mechanical parts appear to be
Read More… from Non-Linear Volume Readings – When Should A Calibration Adjustment Be Made?
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