Stage 4. membrane. 0.0001 microns. ‘Nanofiltration’ process that removes most water impurities down to one thousandth of a micron! Needs previous filters so it doesn’t become damaged and blocked prematurely. RO membranes, like all filter media have a finite capacity, so will need changing between 6-12 months, depending on factors like your regional water feed, your daily water consumption and any pre RO treatments like a water softener.
Deliveries and Couriers: Providing your order is in stock, we normally send orders out within 48 hours of receiving it via UK Mail.
- £10 surcharge for all orders under £50
- £10 surcharge to Scottish Highlands and Islands
- Abroad? If you are interested in purchasing our products, please email firstname.lastname@example.org for an accurate shipping quote.