Granular ferric hydroxide filter media in accordance with EN 15029

EVERZIT® As is a filter media based on iron (III) hydroxide oxide. Due to its high chemical activity, EVERZIT® As is ideally suited for adsorption of arsenic and other heavy metals.
A special manufacturing process is used to produce iron hydroxide in granular form. The granulometry of the product can be controlled in the process, permitting manufacturing of various product grades for a wide variety of application fields.

Grain sizes

0.5 - 2.0 mm
2.0 - 4.0 mm


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

Quality and purity


EVERZIT® As complies fully with the following standards and regulations:

  • EN 15029*
  • German Drinking Water Ordinance 2023

*Note: While EVERZIT® As exceeds the permissible manganese content given in Table A.1 of EN 15029, this value is explicitly provided for informative purposes only and is in no way binding.

Water extraction testing clearly shows that manganese leach-out from EVERZIT® As occurs in trace amounts only, i.e. far below the limits specified in Germany's strict Drinking Water Ordinance.

Chemical and physical characteristics

Iron content> 40 %
Ironhydroxide content> 64 %
Specific densityapprox. 1.9 g/cm³
Bulk densityapprox. 600 - 650 kg/m³
Specific surface (BET) approx. 300 m²/g
Moisture < 10 %

Features and benefits

  • Outstanding value for purchase investment
  • Dry product, easy to transport and handle
  • High-strength granular particles permit layer heights up to 5000 mm
  • Environment friendly and cost-efficient due to utilization of recycled ferric hydroxide sludge from water treatment
  • Problem-free, inexpensive waste disposal of spent adsorbents


EVERZIT® As is used in single-layer filters for

  • Arsenic adsorption in drinking water treatment
  • Groundwater treatment in contaminated-site remediation
  • Treatment of industrial wastewaters contaminated with heavy metals

A two-stage process configuration is normally used, i.e. the raw water first passes through a dual media filter for particulate and/or iron and manganese removal and then through the EVERZIT® As filter.

Application sectors

  • Drinking water treatment
  • Environmental remediation

Packaging and delivery

  • 25 kg plastic bag
  • 500 kg big bags
  • Bulk transport in silo trucks