Website resources
A chlorine dilution calculator can be found at www2.health.vic.gov.au/public-health/infectious-diseases/infection-control-guidelines/chlorine-dilutions-calculator
A general solution dilution calculator can be found at:
- www.physiologyweb.com/calculators/dilution_calculator_mass_per_volume.html
- www.tocris.com/resources/dilution-calculator
- www.publichealthontario.ca/en/health-topics/environmental-occupational-health/water-quality/chlorine-dilution-calculator
Dilution equation
C1V1 = C2V2
Where:
C1: the concentration of the stock solution.
V1: the volume to be removed (i.e., aliquoted) from the concentrated stock solution.
C2: the final concentration of the diluted solution.
V2: the final volume of the diluted solution. This is the volume that results after V1 from the stock solution has been diluted with diluent to achieve a total diluted volume of V2
Note: units must be consistent. i.e. C1 & C2 and V1 & V2 must be in the same units.
Example
To make a make 1 litre of 0.5% dilute solution of chlorine from 10% concentrated stock solution:
10% × V1 = 1L × 0.5%
V1 = (1L × 0.5%) ÷ 10%
V1 = 0.05L
V1 = 0.05L
Thus, 0.05L (50mL) of the 10% concentrated stock solution is needed to make 1L of 0.5% dilute solution of chlorine, i.e. add 0.05L of 10% concentrated stock solution to your mixing bucket and then fill it to 1L with clean water.
