EN 12914:2012

Overview

EN 12914:2012 is a European Standard published by CEN that specifies the requirements for powdered perlite used in the treatment of water intended for human consumption. This standard outlines the characteristics, purity criteria, and test methods relevant to powdered perlite, ensuring its safe and effective application in drinking water purification processes. It is applicable across Europe and serves as a fundamental guideline for manufacturers, suppliers, and users of powdered perlite in water treatment.

Key Topics

• Scope and Application
  EN 12914:2012 applies specifically to powdered perlite products utilized for treating water destined for human consumption. The standard defines physical, chemical, and specific properties necessary to maintain water quality and safety.

• Physical Properties
  Powders must be white in appearance with at least 95% of particles under 1000 µm, with bulk density ranging between 200 to 700 kg/m³. Particle size distribution and uniformity ensure optimal filtration performance.

• Chemical Purity Requirements
  The standard mandates minimum purity levels:

  • Silicon dioxide (SiO2) ≥ 70%
  • Aluminium oxide (Al2O3) ≥ 10%
  • Sodium and potassium oxides (Na2O + K2O) ≥ 5%
    It also limits mass loss at 150°C to a maximum of 5%, reflecting acceptable water content and volatile compounds.

• Testing and Analysis
  EN 12914 provides detailed test methods for analyzing particle size, bulk density, chemical components, permeability, and cake density based on referenced standards such as EN 12902 and EN ISO 10058.

• Labeling and Transportation
  The product must be labeled clearly with product name, grade, net mass, supplier details, and conformity declaration. Transportation guidelines state powdered perlite is not classified as hazardous for road, rail, sea, or air transport.

• Storage Guidelines
  Long-term stability is assured if the product is kept dry and away from volatile or odorous substances. Proper storage prevents moisture absorption and contamination that could affect purity and performance.

Applications

• Water Treatment for Human Consumption
  Powdered perlite serves as an inorganic, filtering material in drinking water treatment plants. It effectively removes solid contaminants, enhancing water clarity and safety.

• Filtration Media
  The material's permeability and low cake density make it suitable for use as supporting or filtering media in industrial and municipal water purification systems.

• Compliance with Water Quality Regulations
  Using powdered perlite complying with EN 12914 supports adherence to EU Directive 98/83/EC on water quality, helping operators meet strict health and safety standards.

Related Standards

• EN 12901:1999 - Definitions for inorganic supporting and filtering materials used in water treatment.
• EN 12902 - Test methods for inorganic filtering materials, including particle size analysis and permeability assessments.
• EN ISO 10058 - Chemical analysis methods related to oxide content determination essential for purity verification.
• EU Regulation (EC) No 1272/2008 - Guidelines on classification, labelling, and packaging of substances relevant for product labeling and hazard communication.
• Council Directive 98/83/EC - Quality standards for water intended for human consumption that underlie the safe use of powdered perlite in water treatment.

Keywords: EN 12914:2012, powdered perlite, water treatment, drinking water purification, filtration media, perlite powder standard, chemical purity, water quality standards, European Standard, CEN standard, powdered perlite water filtration.