andrewpreece wrote:

NB; Thre are different fluxes available, there is one in a beige
round tin
called Tempus or something
like that, 'the mild flux'. It is OK but needs all surfaces to be
well
cleaned. On the other hand, an aggressive flux like 'Everflux' will
make a
joint without having to clean the joints at all! Some people dislike
agressive fluxes because of their corrosive natures.

And aggresive flux is not recommended when soldering gas pipe runs :-0

Jason