Anthracite-based filter media in accordance with EN 12907

EVERZIT® Special PLUS is a thermally treated filter media based on anthracite coal. It was developed primarily for treatment of swimming pool water by removal of disinfection byproducts such as chloramines, trihalomethanes and adsorbable organic halogen compounds (AOX).

Grain size

0.6 - 1.6 mm


Quality and purity

EVERZIT® Spezial PLUS complies fully with the following standards and regulations:

  • EN 12907
  • German Drinking Water Ordinance 2023
  • DIN 19643
  • DVGW work sheet W 213
  • ÖNORM 6216

Chemical and physical characteristics

Raw materialnatural anthracite
Specific densityapprox. 1.3 g/cm³
Bulk densityapprox. 620 kg/m³
Specific surface area (BET)approx. 320 m²/g
Ashapprox. 3  %
Water< 2 %

Features and benefits

  • Complies with permissible limits for chloramine and trihalomethanes in accordance with DIN 19643
  • Can be used to upgrade existing filter plants without need for equipment modifications 
  • Easy to handle
  • Reduces fresh water consumption
  • Provides lasting improvement of air quality above indoor pools


EVERZIT® Special PLUS is used as the top layer in dual media filters.
The hydraulic properties of EVERZIT® Special PLUS are virtually identical to those of EVERZIT® N (Type I) which has been successfully used in filtration for decades.
Therefore the existing filter can normally be used for EVERZIT® Special PLUS without need for modification. Degradation of the disinfection byproducts occurs by adsorption as well as catalytic decomposition on phase interfaces in the media. 

Application sectors

  • Water treatment in swimming pools
  • Drinking water treatment

Packaging and delivery

  • 50 litre PE bags 
  • 1.65 m³ big bags
  • Bulk transport in silo trucks