Kloorilaskuri is a free Android app developed by Terveyden ja hyvinvoinnin laitos, which helps in calculating the dosage of sodium hypochlorite required to achieve a certain level of chlorine concentration. It can be used for both continuous and one-time chlorination of water.

The app also saves the five most recent calculations and names them according to the date and time of the calculation. Users can use the previous calculation as a basis for a new calculation, and the app saves each new calculation separately. Users can also delete individual or all saved calculations.

It is important to ensure that the values entered are accurate and in the correct units. Additionally, users should always verify the results by measuring the final concentration of chlorine.

For more detailed instructions, users can visit thl.fi. It is important to note that the app developer is not responsible for any errors or mistakes made while using the app. Users are advised to always double-check the final amount of chlorine added by measuring it.