Ultimate Water South Africa - Supplier
 of Everpure Water Filter Systems  

Home Page
Contact Us

Household Products
Industrial Products
How It Works
Frequently Asked Questions
Everpure
Our Supplier

How our water systems work

The Pre-Coat solution

How big is 1/2 of a micron?


It's difficult to imagine something as small as 1/50 000 inch or 1/2 of a micron. So let's put it into perspective.

A single particle of cigarette smoke is approximately 1/2 a micron in size.

Everpure's unique pre-coat design consists of material folded over a drainage grid which supports a coat of the adsorptive Micro-Pure® powder - a proprietary blend of powdered activated carbon and other filtering materials.

When tap water fills the cartridge and flows through the Micro-Pure coating, foul tastes and odours are stripped from the water by millions of Micro-Pure particles. Water leaving your tap is sparkling, brilliant, and free of unwanted tastes and odours.

The Filtration Solution

Microscopic protozoan cysts, asbestos fibers, particles of rust and turbidity and many other substances are often smaller than 5 microns in size. Conventional filters won't remove these from your water, but these Drinking Water Systems will. Each of them is Certified to remove at least 99% of turbidity, 99.6% of asbestos fibers, 99.9% of all particles 1/2 micron and larger in size, and 99.9% of cryptosporidium cysts, the smallest of intestinal parasites.

The Absorptive Solution

Everpure's System provides the exceptional mechanical filtration capacity of pre-coat with the highly efficient chemical removal capabilities of carefully selected granular activated carbon. The two-chambered unit is no bigger than a large thermos bottle and fits easily beneath the kitchen sink. Under normal water conditions and usage, Everpure's systems provide six months to a year's supply of drinking and cooking water right from the tap.

How the Everpure pre-coat water filter works

A filter's ability to physically remove turbidity and suspended matter from water differs greatly from its ability to remove tastes and odours, which usually exist in dissolved form. Most common filters are capable of only one or the other of these functions, while Everpure has uniquely combined both in the same filter.

Unique Pre-Coat Design

Incoming water passes through a non-return valve at the bottom of the inlet tube and mixes with the MICRO-PURE® blend to form a coating on the external surfaces of the folded filter element or septum.

MICRO-PURE®, the unique filtering material used in Everpure precoat filters, is a proprietary blend of powdered activated carbon and other food-grade water treatment materials.

Any tastes or odours in the water passing through the MICROPURE® formed on the supporting septum are adsorbed by the powdered carbon.

This MICROPURE® also provides part of the sub-micron filtering system, which wilt filter out all suspended particulate matter greater than 0.5 microns (0,0005 mm).

As the filtered water passes through the septum, it is collected in a cavity, formed by a non-compressible grid from where it flows to the filter outlet, ensuring premium quality 'ingredient' water.

Most Everpure water filters are compact, point-of-use filters that use the pre-coat filtration method generally employed in large complicated industrial applications where premium quality water is necessary at any cost. Everpure pre-coat filters provide this premium quality water at reasonable cost with great convenience.

Large Capacity to Remove Tastes and Odours

Extremely small particles of activated carbon are part of the proprietary MICRO-PURE® filtering media in Everpure pre-coat filters.
This activated carbon removes the off-tastes and odours in a physiochemical process called adsorption.
The total surface area available determines a filter's capacity and ability to adsorb tastes and odour molecules. The smaller the carbon particle (in powdered form), the more efficient it is at adsorption. Everpure's MICRO-PURE® filtering media is microscopically fine, providing a large total surface area that is easily accessible to the water flowing through the filter. Consequently, it is extremely efficient at adsorbing tastes and odours.

Large Filtering Area ... Small Pore Size

Functional filtering area and pore size determine water quality.


The unique Everpure precoat design gives you 40 times more filtering area than a bed-type filter and over 4 times more than a spool type filter of equivalent size.

The ability of a filter to take turbidity out of water is more a physical removal function than one of chemical adsorption. This physical filtration depends primarily upon two important factors: the size of the pores through which the water must pass, and the total amount of filtering area available.
Pore size is important because it determines the size of the impurities that will be physically prevented from passing through the filter. The pore size of the MICRO-PURE® cake is microscopically so small that the Everpure filter removes impurities as tiny as 0.5 micron. This small pore size is necessary to produce crystal clear water and to remove particulate industrial wastes (such as asbestos fibres).
When a filter's pore size is so small a large surface area is essential to provide an adequate rate of flow and acceptable filtration capacity. The droplets of water flowing through the small pores in the Everpure filter cake have a mist-like quality, allowing an extremely low velocity through each pore. This, combined with the large filter area designed into each Everpure filter, produces excellent dirt removal capacity.

Everpure Filters Do Not Secretly Fail

Comparative Pore Sizes.


Pore size is important because it determines the size of impurities that will be removed from the water.

The Everpure pre-coat design uses a balanced pressure principle that allows water to flow through both sides of the filter element and then along a non-compressible drainage grid sandwiched in between.
When the water pressure suddenly changes, as with water hammer, equal pressure is exerted on both sides of the grid. Because the grid is rigid and will not flex or compress, the MICRO-PURE® cake is not disturbed. The collected dirt or impurities cannot migrate through the filter media. A very important feature of the Everpure filter is that the clarity of the water it produces remains uniform throughout the filter's life. As the filter actively removes impurities from the water, its microscopically small pores slowly fill... and the amount of water the filter yields gradually becomes less and less. When the flow of water from the filter becomes too slow for convenience, the filter cartridge should be replaced. The Everpure filter cartridge is designed to operate at pressures upto 142 psi (10 bars), but can withstand hydrostatic test pressures of up to 500 psi (34 bar).

Contact Us

Cape Town:
Kilarney Gardens
(T) 27(0) 021 556 7418
(F) 27(0) 21 557 6023
(C) 082 497 3589

Enjoy cleaner, better tasting water.


National Sanitation Foundation Standards

Standard No. 42: Aesthetic Effects
Chemical Reduction Units:
Taste and Odour Reduction and Chlorine Reduction - Category 1
Particulate Reduction Units:
Particulate Reduction - Class 1, 99.9% reduction of particles one-half micron and larger in size.

Standard No. 53: Health Effects
Mechanical Filtration Unit:
Turbidity Reduction
Cyst Reduction

All our Everpure units have been tested and listed by NSF only for the functions listed above. Check for compliance with state and local laws and regulations. Do not use where the water is microbiologically unsafe or with water of unknown quality without adequate disinfection before or after the unit.