Anthracite filter media in accordance with EN 12909

EVERZIT® N is a natural anthracite filter material produced in Germany. Especially favorable geological processes formed anthracite with a particularly special structure. Our unique refining process of cleaning, crushing and sieving ensures our capability to convert anthracite to premium-quality filter media for single-layer and multi-layer filtration. It has a proven track record spanning more than 45 years in successful water treatment worldwide.

Grain sizes

I)    0.6 - 1.6 mm
II)   1.4 - 2.5 mm
III)  2.0 - 4.0 mm
IV)  3.5 - 7.0 mm

Other grain-size ranges can be supplied in accordance with your specific requirements.
Please feel free to contact us!

Quality and purity

EVERZIT®N meets the requirements of the following standards and regulations:

  • EN 12909
  • German Drinking Water Ordinance 2023
  • AWWA B 100-16
  • DIN 19643
  • DVGW work sheet W 213
  • ÖNORM 6216

Chemical and physical characteristics

Carbon approx. 92.0 %
Ash approx. 5.0 %
Volatile matter approx. 6.0 %
Specific density approx. 1.35 - 1.6 g/cm³
Bulk density approx. 700 kg/m³
Hardness 3 - 4 Mohs
(Hardgrove Grindability Index)
approx. 32° HGI

Features and benefits

EVERZIT® N has by nature ideal characteristics for a filter media:

  • High abrasion resistance
  • Withstands high-speed backwashing without media wash-out
  • Optimum separation of filter layers during backwashing
  • Good retention, even of particulates with high specific gravity
  • No adhesion of precipitated ferrous- and manganese compounds
  • No silicic acid leach-out into water


Dual media filtration avoids conventional "surface-only" filtration as found in sand filter beds. Particulate retention occurs throughout the media (in-depth filtration) which offers considerable advantages, i.e. lower investment  costs and reduced operating costs:

  • longer run time between backwashes
  • reduced pressure drop
  • higher filtration speeds feasible
  • reduced backwash-related downtime and costs
  • higher treatment capacity
  • improved filtrate quality

Applicaton sectors

  • Drinking water treatment
  • Sea water desalination
  • Wastewater treatment
  • Water treatment in swimming pools
  • Process water treatment

Packaging and delivery

  • 50 litre PE bags on Euro or one-way pallets
  • 1.65 m³ big bags
  • Bulk transport in silo trucks