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Calibration tolerance question using Pipettes

duff999

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#1
Hi All

I have a question on how to determine the tolerance on the calibration certificate I got back from the folks who do our Pipette calibration. In short, I had 2 that showed a failure on the As Found data. I am trying to determine if there is a standard tolerance level for the Pipettes, or some general guidelines.

The Max volume was 20, 2 low 20 high. My reading came back at 2.29 for low, 20.26 high. I just don't know how to calculate the tolerance here. Any help would be appreciated.
 
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#3
The tolerance is given by the manufacturer for specific brand/model of pipette. Alternatively, you can consider ISO 8655 tolerances and in your situation it is 0.4ul. Your reading came back within acceptable readings 2+.4ul, 20+.4ul. Hope this helps you to understand.
 
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