This European Standard is applicable to powdered perlite used for treatment of water intended for human consumption. It describes the characteristics of powdered perlite and specifies the requirements and the corresponding test methods for powdered perlite and gives information on its use in water treatment.
BS EN 12914:2005 history
2012BS EN 12914:2012 Products used for treatment of water intended for human consumption. Powdered perlite
2006BS EN 12914:2005 Products used for treatment of water intended for human consumption - Powdered perlite