Pure Clear Replacement Active Extreme Filter Cartridge

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  • The Pure Clear® - Active Water Filter Cartridge is compatible with the Pure Clear® - Active product range meaning you can take your bottle out to the extremes or use it for sport and remain hydrated at all times.
  • Protects against bacteria, waterborne viruses, parasites, microplastics, heavy metals, chlorine, trace pharmaceuticals, PFOAs, endotoxins and much more. 
  • Our filters are rigorously and independently tested to give the best possible filtration performance in compliance with the NSF and ANSI drinking water requirements.
  • The Pure Clear® - Active Water Filter Cartridge was scientifically designed to help reduce internal bacteria growth within the filter.
  • This is an advanced filter not a UF (Ultra Filtration) filter with an added carbon block.
  • The Pure Clear® - Active Water Filter Cartridge uses breakthrough electro-adsorptive technology with powder-activated carbon and not mechanical filter media like other filters. 
  • Your purchase makes a difference by contributing 1400 litres of pure, clean, safe drinking water to those that need it most. 

Most filters that we see in today's market are Ultrafiltration (UF) filters combined with a carbon block. If you are looking for a filter to protect you or your family from outdoor water source contaminants it must protect from Waterborne Viruses NOT just Bacteria, Parasites and the other usual contaminants. In today's world of clever advertising, it is easy for companies to distract you from this fact. Our filter is as thorough as a filter can be, and our advice is clear, read the filter details before you purchase a filter bottle. Does the filter remove PFOAs, Viruses, Trace Pharmaceuticals, Endotoxins and Chemical reduction? If not, then you are at a very real risk of these contaminants that are present in our water sources, and they can make you seriously ill.

At Pure Clear® we do not believe in long-life filters for use in filter bottles. Long-life filters have a tendency to repeatedly block and suffer an increased pull resistance (it becomes more and more difficult to draw fluid through the filter as the filter life increases). Many filter bottle companies highlight statistics of the filter performance after just a short period of filtration time, they do not offer the statistics of the filter towards the end of its life. Imagine a battery full of charge, producing a large amount of power, compared with a battery at the end of its life, producing little power output. The long-life filter performance will change over time, and the longer you use it, the lower the filtration performance will be. Long-life filters tend to be hollow (UF) and over a short period of time bacteria can grow within the filter itself and become harmful. The carbon block that filters most of the real unpleasant contaminants does not have the same shelf life as the filter itself, usually, the carbon life is 200 litres but because the long-life filter is advertised at 2000-4000 litres customers think it is safe to use for that amount of time, they are wrong. Therefore, we keep our filter life short. We recommend you change our filter after 200 litres or 2 months, which is the equivalent of 400 standard plastic 50cl water bottles that cost on average £1 each. If you calculate that, it's £400 in plastic water bottles vs the cost of our water filter, you can save huge amounts of money and the environment at the same time. We even have a month indicator on the filter housing to remind you when you put the filter in the bottle so you don't change it too early. 

Bacteria 99.9999%
Waterborne Viruses 99.9959%
Parasites 99.999%
Cysts 99.999%
Microplastics 99%
Heavy Metals 95%
Chlorine 90%
Particulates Yes
Polysaccharides (TEP) Yes
Turbidity Yes
Colloids Yes
Endotoxin Yes
Chemical reduction Yes
Trace Pharmaceuticals Yes
Filter Life 200L or 2 months = 400 x 50cl plastic water bottles


Delivery Details

In-stock items are dispatched the same day if ordered before 2pm (Monday - Friday) or the next working day if ordered after 2pm or on a weekend.

Deliveries are normally next working day for orders over £60. If under £60, we sometimes use a 48 hour service. You will have the option to upgrade to a next day service at the checkout.

Special Order items are dispatched within the timescales displayed after selecting your size.

Most orders are dispatched using DPD Next Working Day.

We use Royal Mail 24 for the more remote parts of Scotland, the Channel Islands and Northern Ireland. Please allow a little extra time for delivery in these areas.

For orders under £60, we normally dispatch using Royal Mail 48 with delivery being made in 2 to 3 days. You will have the option to upgrade to a next day service in the checkout.

A tracking number will be emailed to you for all orders over £60 on the day of dispatch.

For orders under £60 dispatched using an untracked economy service, a reference number will be emailed, but you will not get full tracking, only confirmation once delivery has been attempted.

Other Questions

Sometimes you will see 'Special Order' when selecting your size. For these items, we will dispatch once we have received them from our supplier.

An estimated lead time will be displayed for Special Order items.

Yes, returns are accepted within 30 days of purchase so long as it is unused and still in it's original packaging*.

You can return for an exchange or refund.

Refunds are carried out immediately after receiving your item back. Return postage is at your own cost.

* for safety reasons, we do not accept the return of climbing equipment or underwear once it has been tried on.

All items sold come with a minimum 12 month warranty that covers defects in materials or workmanship.

Certain brands offer an additional warranty. You can find this information on the brands own website, or you can contact us for additional information.

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