Regarding ISO, it depends of ...

Published December 7, 2017 22:10 by Ricardo Morales, Jefe de Tratamiento de Agua, Materia Prima e Insumos at Compañia Azucarera La Estrella S.A.

Regarding ISO, it depends of the country. ISO does not have a fixed standard for chlorine content, but it states that the content must comply with national regulation. For example in Panama, the chlorine content shuold be between 0.8 and 1.5 ppm, but in other contries it shouldn't be above 1 ppm.