KamalS wrote:Sure, but I would like to know which ones you use and recommend.
I use SUR-TIN because it is the only multi part available in local store and I am super satisfied, basically because while in "non mixed" state the parts have super long shell life. Now if you mix all parts together you get 2.5L of stuff that will stop working in 6 months, but you don't mix it all up. What I do is I split all 3 parts in 4 measurements. I just approximate it I don't use some fine scale etc. So you mix in 1/4 of the liquid and 1/4 of the first powdery thing and 1/4 of the second salty thing with 625 (600 is fine :D ) mL of water. You can use regular tap water but if you can use demineralized / distilled water you will improve shelf life of newly made tinning solution. This 600mL of solution will last you some 6 months (or 0.5m2 of tinned copper whatever comes first).
I personally use this 600mL until it stops working, then I throw it away. I know some ppl who don't ever throw it away but just add a second batch of chemicals into same solution and top it with distilled water up to 650mL .. but I never tried that so can't say if it works better or worse then new solution..