Aqua-Techniek B.V.
Nijverheidsweg 15a
3225 LL Hellevoetsluis
The Netherlands

Aqua-sand / Silica sand, Filtersand

Aqua-sand is a 100 % natural silica sand, through an elaborate refining process, together with constant quality control, elevated to a top quality media - free of clay, dust, organic matter or any other contamination, thus meeting all inter­national standards.

Aqua-sand assure:

  • high purity of the treated water,
  • longer life of the filter beds,

because of:

  • high silica content,
  • accurate grading through thorough classification,
  • chemical resistance.


Filtration of

  • potable water, surface water as well as ground water,
  • swimming-pool water,
  • waste water,
  • sewage.

Chemical analysis


EN 12904

Type 1

SiO2mass-%> 97> 96
Fe2O3mass-%< 1< 2
Al2O3mass-%< 1< 3

Physical characteristics


EN 12904
Type 1

Densityg/cm32.62.5 - 2.8
Bulk densitykg/m315001400 - 1700

Acid solubility

24 h in 20% HCl

mass-%< 1< 2
Shape round, spherical
Colour white, white to yellow
Sizes available Sizes to all international standards upon request. We produce special sizes perfectly meeting customer’s specification as to the effective size and uniformity coefficient.


  • 25 kg PE-bags, palletised and shrink-wrapped,
  • Big bags,
  • Bulk-carriers.
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