So, dusted the bicycle down and off to the shops for a tube of inhibitor to inject into a rad (previous tips and advice on performing this procedure has been noted.)
First choice, D&M, sadly didn't do it any more, but I did get to have a chat and catch up with them and dribble over some of their new Milwaukee stuff (it's nice!).
Plumbcentre not open Sat afternoons.
Down to Wickes. They do bottles of the stuff but not injectable ones, and despite the helpful advice on the back to introduce via an empty rad if on a sealed system no tools in evidence to assist this and I can't think how to empty the chosen rad in the first place.
Right, last choice (in every sense of the word): Homebase.
Yup, they had it. I was stunned at the price, though: £30 for an injector tube of Fernox "Superconcentrate Central Heating Protector".
Is this about right in other's experience with getting this product from plumber's merchants?
If it's within a couple of quid I'll use it and get the job done this weekend.
If it's a tenner or so out I'll wait till Monday, see if Plumbcentre are significantly cheaper, and if so get that and take the homebase stuff back as a matter of principle.
-- Richard Sampson
email me at richard at olifant d-ot co do-t uk