Zeoclere High Grade Pool Filter Media


  • Colour
    Light grey (MgO = 85%)
  • Hardness
    4 Moh
  • Grain size
    Variety of sizes available
  • Pore volume
    Approximately 5-10%
  • Bulk density
  • Stability
    from pH3 - pH12

Zeoclere High Grade Pool Filter Media

Zeoclere30 was specially selected high-grade mineral for use in swimming pool filtration.  Its structure was specially selected to ensure pool water quality and clarity.  This is in addition to stripping out high levels of ammonium brought into the pool by swimmers.  It also removes heavy metals found in some water supplies.  Zeoclere30 increases water clarity in some instances by up 60% compared to sand filtration.  Four grades are available: 0.8-1.24mm (the standard grade), 1-2mm, 2-4mm and 0.5-1mm.

Zeoclere is from a family of over 54 different minerals found around the world.  With now over 30 years’ experience in pool filtration, Zeoclere is the only proven mineral for use in swimming pool pressure. It has a purity of between 80-85% and is constant between these percentages. The material operates well in both small and large pressure vessels. Tests carried out using a 1 metre column with the flow in a constant backwash mode for 180 days x 24 hours, showed clear-up rate is faster than that of silica sand and glass.

The average ammonia collection for this grade is 2.88g/litre. This may vary dependent on the flow rate. Other advantages of Zeoclere are wide temperature performance along with high removal efficiency including iron/zinc/lead/copper and silver removal. Because of the high reduction of ammonia removal, the use of chlorine is similarly reduced and on average is quoted that up to 40% savings have been achieved. Zeoclere has a far greater (400%) surface area than silica sand or glass media.  Therefore, backwashing (where appropriate) can be dramatically reduced, saving many thousands of litres of heated water and chemicals going to waste.  When used in a commercial pool environment, sewage clean-up costs are also reduced. 


Under correct conditions chemical reduction will be achieved along with water saving, power cost and result in less maintenance:

  • High ammonia removal (average 2.8gm/lt) dependent on the flow rate
  • Ion removal efficiency is high having a far greater surface area than both sand and glass
  • Longevity
  • Turbidity is shown to be up to 60% better than accepted silica sand and glass media
  • No health hazards
  • Zeoclere has a far greater (400%) surface area than silica sand or glass, therefore, backwashing, where appropriate, can be dramatically reduced

 Because of the high level of ammonia removal, the use of chlorine is reduced and, on average, up to 40% savings have been achieved. 

Regeneration of Zeoclere30 0.8–1.4 mm

Once saturated with ammonia, Zeoclere30 will need to be regenerated.  Observe the manufacturer’s safety instructions when using hypochlorite.  This procedure should be carried out by a qualified pool service engineer.

Regeneration in a private pool is generally required around 10 years depending on the bathing load. A commercial pool may require regeneration more frequently.  

MSI provides, on request, self-adhesive information labels to affix to filters.  These give your company name and contact details as well as information on servicing periods. 

Packaging Options 

  • Packed in 20kg bags, weight 20kg
  • 20kg bags x 50 to a pallet
  • Pallets 110 x 110 x 115cm, h
  • Weight 1000kg
  • Container shipments equal 20 x 1 tonne pallets
  • Own label packaging

Shipping Options 

  • Pallets of 50 x 20 kg bags
  • Pallets of 110 x 110 x 115cm, h.
  • Individual bags (on request) 

Special Delivery Requirements 

Please advise MSI if any special arrangements are required for off-loading eg:

  • Do you require a tail lift vehicle?
  • Is there a forklift available on site?
  • Is access to the site easy for a large vehicle (if the delivery is over 2 tonnes)?
  • Is there someone to assist with unloading?  If external carriers are used assume the freight driver will not assist
  • Is the entry road capable of receiving a heavy vehicle?

Zeoclere is shipped on pallets of 50 x 20 kg bags:
Pallets 110 x 110 x 115cm, h.

Individual bags of Zeoclere can be shipped on request.


  • DWI Chemical Committee Approval for use in public pools
  • NSF 61 certification for drinking water
  • NSF 50 certification for use in pools and spas
  • NSF 50-ii certification tests - turbidity
  • GSA approval for use in US Military Bases worldwide

Technical and dimensions.

Zeoclere Premium Filter Media


  1. Application Guide for Residential & Light Commercial Filters
  2. Application Guide for Commercial Filters – 40 Inch Bed
  3. Application Guide for Commercial Filters – 48 Inch Bed
  4. Regeneration Guide
  5. Guide for Converting Sand Weight to Zeoclere


  1. Guide for Converting Sand Weight to Zeoclere
  2. A Guide to Backwash – Bed Expansion
  3. Application Guide for Residential & Light Commercial Filters
  4. Application Guide for Commercial Filters – 1000mm Bed
  5. Application Guide for Commercial Filters – 1200mm Bed
  6. Zeoclere 30 Turbidity Report
  7. Zeoclere 30 Data Sheet
  8. Zeoclere 30 Material Safety Data Sheet

For order information, visit the Orders page.   Alternatively,  email sales@mineralsi.com or call +44(0)1825 790 524.

Read Zeoclere Case Study 

Order Enquiry

Order Spare Parts

Call our spares hotline on +44(0)1825 790524

Complete parts list for the Cruiser C600 & Puronizer.



“I put my team’s success down to a secret weapon they stumbled upon more than ten years ago when they switched from basic sand in the filters to a specialist media called Zeoclere. Now we don’t just use Zeoclere – we actively recommend it. I would not go back to sand in our pool filters now we have seen what a difference it makes. Not only has the water consumption been transformed, Fareham has saved money on chemical costs, energy costs and overall maintenance of £8,000 to £10,000 annually. Although Zeoclere is initially more expensive than sand, I would categorically put payback within a year.”
Colin Trimmings
Technical and Support Manager at Fareham Leisure Centre