Flow Moisture Point Formula

Equation for calculate flow moisture point is,

$FMP\mathit{=}\mathit{ }\frac{{\displaystyle \frac{\mathit{(}{\mathit{m}}_{\mathit{1}}\mathit{-}{\mathit{m}}_{\mathit{2}}\mathit{)}}{{\mathit{m}}_{\mathit{1}}}}\mathit{+}{\displaystyle \frac{\mathit{(}{\mathit{m}}_{\mathit{3}}\mathit{-}{\mathit{m}}_{\mathit{4}}\mathit{)}}{{\mathit{m}}_{\mathit{3}}}}}{\mathit{2}}\mathit{\times }\mathit{100}$

Where:
m₁ = mass of wet sample just above the Flow Moisture Point (FMP),
m₂ = mass of dry sample just above the Flow Moisture Point (FMP),
m₃ = mass of wet sample just below the Flow Moisture Point (FMP), and
m₄ = mass of dry sample just below the Flow Moisture Point (FMP)