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Civil Engineering

Threshold odour number (TON) Calculator

Civil Engineering

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Threshold odour number (TON)

Equation and meaning

\[T_{O\_N} = \frac{Final_{volume\_at\_which\_odour\_is\_hardly\_det\_ectable}}{Sample_{volume}}\]

Threshold odour number

Variables in this formula

Final_volume_at_which_odour_is_hardly_det_ectable — Final Volume At Which Odour Is Hardly Det Ectable
Enter this value unless it is the selected unknown.
Sample_volume — Sample Volume
Enter this value unless it is the selected unknown.
T_O_N — T O N
Enter this value unless it is the selected unknown.

How to use this calculator

  1. Leave one value emptyThe empty field is automatically treated as the unknown.
  2. Enter known values and unitsChoose N, kgf, dyn, SI or another compatible unit when available.
  3. Review the automatic answerThe result appears immediately and is substituted back into the formula to check the residual.
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