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How to Clean a Pipet

The pipette is a common device used to transfer and measure solutions during scientific experiments. Using an unclean pipette can result in the contamination of one or more of your solutions, thereby jeopardizing the validity of the experiment's results. It is therefore of utmost importance that you follow proper pipette-cleaning protocol at the beginning of every experiment that you conduct in a laboratory setting.

Solution
Distilled water

Instructions

- 1
  Pour a small amount of the solution you wish to transfer inside a beaker.
- 2
  Draw some of the solution inside of the pipette, using an attached propiette or a pipette pump.
- 3
  Tilt the pipette in every direction until the solution has had a chance to touch the entire inner surface of the pipette. If beads of solution stick to any area of the pipette's inner walls, it is not clean.
- 4
  Discard of the solution in the pipette and repeat Steps 1-3 until no further beading is observed.
- 5
  Rinse the inside and outside of the pipette, using distilled water upon completion of your experiment.

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