Fernox Powerflow Flux 350g
best flux I have used. Never had a leak would recommend
30 Jul 2015
Does the job
All you need flux to do is to hold on long enough to get your solder in the joint, then help pull it in for a nice seal. This does exactly that, good stuff.
8 May 2015
I've been using Powerflow since the mid '80s and I have never found a better flux
31 Dec 2014
I've tried La-Co & the Fernox stuff and both are rubbish, what you need is a dirty great pot of the yellow Powerflow flux. It works a treat everytime. It would have got 5/5 on features if it had a little brush with it or Plumbfix sold them but outstanding stuff anyway!
11 Dec 2013