Heavy Metal Determination (Copper, Lead)

Thiosulfate concentration (mol/L) Titration volume (mL) Sample volume (mL) Sample ABV (%)

Calibration slope m Calibration intercept b Measured absorbance A Dilution factor Sample ABV (%)

Calculated result (mg/dm³ absolute alcohol) Your standard's limit (mg/dm³)

Enter your own limit — verify the exact figures for your specific standard separately as needed.

Copper mass—

Concentration in sample—

Concentration in absolute alcohol—

Based on the 2Cu²⁺+4I⁻→2CuI+I₂ stoichiometry — the copper-to-thiosulfate molar ratio is exactly 1:1.

Concentration in diluted solution—

Concentration in original sample—

Concentration in absolute alcohol—

Status—

Margin from limit—