Just stating the facts!
No need for insults, if you have a problem call us its as easy as that.
DI resin becoming exhausted through usage and the TDS rising, is normal.
The time a DI cartridge lasts depends on several factors, the TDS of the incoming tap water together with the elements that make up the TDS, it is possible that water supplies in the same area can vary considerably in both these factors.
The DI cartridges we use are the very best available using nuclear grade resin rather than the standard MB400 grade.
I am sure their are many users of RO and DI on this board that would be very happy to have only change a filter every six weeks or so.
We have many users that need only to change a filter every 12 months.
It is impossible to predict exactly how long a filter will last in every location across the UK, however in most cases one of our filters will last six months.
I am the Managing Director of Omnipole(UK) Ltd the longest trading WFP Company in the UK and I am also the senior partner in PH Cleaning Services a contract cleaning company which has traded since 1970 and I personally have 28 years experiance of Commmercial Contract window cleaning, specialising in difficult access work.
I set up the very first Graffiti Removal Company in the UK back in the early 1980s and carried out all the graffiti removal for 26 London Boroughs, Nat West,Barclays, Lloyds and The Midland Banks etc.
I was the first supplier of Anti graffiti coatings in the UK.
Amongst many other buildings of national importance I personally cleaned the stone work on Marble Arch,The Nelsons Column, and several Sir Henry Moore's sculptures.
If you would care to visit
www.phcleaning.com you will see some of our latest acheivements.