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THE FEUTEX TOOLKIT

Independent Transfer Uncertainty

Combine independent absolute uncertainties for repeated equal-volume transfers.

Laboratory workspace● Runs in your browser
01 Your input
02 Your result
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FormulaNominal total volume = volume*n; Combined random standard uncertainty = sigma*sqrt(n); Accumulated systematic bias = bias*n
Sources and model references

Worked example

Inputs

Volume per transfer
100 µL
Random standard uncertainty per transfer
1 µL
Transfer count
25
Systematic bias per transfer
0.2 µL

Expected results

Nominal total volume
2500 µL
Combined random standard uncertainty
5 µL
Accumulated systematic bias
5 µL

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Combine independent absolute uncertainties for repeated equal-volume transfers.
  2. Set volume per transfer, random standard uncertainty per transfer, transfer count, systematic bias per transfer in the indicated units.
  3. Calculate and compare nominal total volume, combined random standard uncertainty, accumulated systematic bias.

Try this example

{
  "volume": 100,
  "sigma": 1,
  "n": 25,
  "bias": 0.2
}

Accuracy and scope

Independent random errors and fully correlated constant bias model; not an instrument calibration.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.