[Jewelry making - Article 00821] - [Orchid] Prips Flux preparation problems

[Don/Sandy Ralph]

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    I have always used  Prips flux to prevent firescale on my silver.  I
    have bought the Prips commercially and also used that made by others
    in our shop. 

    Recently I have tried mixing up some myself.  Using a 3:2:2 ratio of
    boric acid, TSP, and borax, and I can not get it all to go into
    solution.  The three parts amounts to about 48 grams of boric acid
    and the twos around 32 grams each, in a quart of water. 

    The mixture remains cloudy through boiling, and then allowing it to
    stand and cool the solution clears, but there is sediment on the
    bottom of the container.  Is this normal or am I doing something
    wrong?  I have used this clear solution while soldering and it seems
    to work OK. 

    I have tried different brands of borax and both powdered and
    granular boric acid, with the same results. The TSP is trisodium
    phosphate. I have also tried increasing the amount of water.  

Can anyone help? 
Thanks, Don


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