On 2007-11-03 11:44:59 +0000, John Stumbles said:

On Fri, 02 Nov 2007 17:31:07 +0000, Fred wrote:

On Fri, 02 Nov 2007 00:10:17 GMT, John Stumbles
wrote:

So why do YOU call it a softener (even in quotes)? It's not: it's a scale
inhibitor plus sediment filter.

Since it seems to contain some sort of ion exchange resin to "inhibit"
the scale, I presumed it did so by the process of softening.

Where does it say anything about ion exchange resin? I'm looking at:
http://www.screwfix.com/app/sfd/cat/pro.jsp?id=72063

The answer lies with catalogue number 88345 which is a replacement cartridge.

As suspected, it's a polyphosphate dosing system. Scale reduction,
yes. Softening, no.