ppm Calculator

THEORY BEHIND CALCULATIONS:

FOR METHOD1 (Mass / Mass): Based on the ratio of solute mass to total mass.

C_ppm = 1 000 000 × m_solute / (m_solvent + m_solute)

Where m_solute = mass of solute, m_solvent = mass of solvent.

FOR METHOD2 (Mass / Volume): Based on solute mass per litre of solution.

C_ppm = m_solute (mg) / V_solution (L)  (1 mg/L ≡ 1 ppm)

Where V_solution = total volume of solution in litres.

FOR METHOD3 (Volume / Volume): Based on solute volume fraction.

C_ppm = 1 000 000 × V_solute / V_solution

Where V_solute and V_solution are in the same units (e.g. mL).

FOR METHOD4 (Mole / Mole): Based on solute mole fraction.

C_ppm = 1 000 000 × n_solute / (n_solvent + n_solute)

Where n_solute and n_solvent are in moles.

FOR ALL METHODS: Percent (%) = C_ppm / 10 000