Pumice Filtration Media


The use of our Pumice Filtration Media in water filtration applications is increasing worldwide. Pumice Filtration Media is used as an alternative to sand and anthracite in the treatment of potable water treatments, seawater reverse osmosis (SWRO), desalination and waste water treatments. Pumice filtration media is increasingly being specified for contracts involving pre-treatment prior to reverse osmosis (RO) and desalination, in both new and refurbished plants particularly in the Middle East. This is due to its extremely high particulate removal, low density and its versatility; it can be used in mono and multi-media filters in both pressure and rapid gravity filter designs.

All our pumice filtration media has British Standard approval (BS EN 12906-1999) – Products used for treatment of water intended for human consumption’, European Standard approval (EN 12901/ 12902:1999) and UK Drinking Water Inspectorate approval. Additionally our pumice filtration media meets all the chemical and physical testing requirements for AWWA B-100 and DIN EN 12906.


We are currently in the process of seeking full SWCC (Saline Water Conversion Corporation) approval to further expand our Middle East Division.



Technical Data Sheet


1. Product Name / Reference


Pumice Filtration Media


2. Main Intended Use


Water filtration media in pre-treatment prior to desalination, desalinisation, reverse osmosis (RO) and seawater reverse osmosis (SWRO).


3. Chemical Description


This media contains no free silica


Compound Element Chemical Formula Typical Content
Silicon Dioxide SiO2 74.55%
Aluminium Oxide Al203 12.45%
Potassium Oxide K2O 4.50%
Sodium Oxide Na2O 4.00%
Ferric Oxide Fe2O <2.00%
Calcium Oxide CaO <2.00%
Magnesium Oxide MgO <2.00%
Titanium Dioxide TiO2 <2.00%
Sulphur Trioxide SO3 0.20%
Manganese Oxide MnO 0.10%
Carbon Dioxide CO2 0.10%
Ferrous Oxide FeO 0.06%
Phosphorous Pentoxide P2O5 0.005%
Combined Water H2O+ 4.35%

Determined by FAAS


4. Physical Properties


a. Bulk Density     410 – 440 kg/m3
b. Melting Point     1200 oC
c. pH Value     7.0 – 8.0
d. Specific Gravity     2.40 g/cm3
e. Hardness     5.5 Mohs


5. Sizes Available


Grade     Size
Pumice Filtration Media No.3     0.2 – 0.5 mm
Pumice Filtration Media No.5     0.8 – 1.3 mm
Pumice Filtration Media No.6     1.2 – 2.4 mm
Pumice Filtration Media No.8     2.0 – 3.5 mm


6. Packaging


Packed in 1.2 cubic metre UV resistant IBC big bags.


Further Information and Technical Support


For further information and case studies please contact us at: water@techfil.co.uk

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