A few questions on bar solder used in the wave solder process . . .


Are all bar solders alike?  All claim to exceed the requirements of
J-Std-006.

Are there any substantial differences between ultra-pure, virgin, etc.?

Any advantage/disadvantage between 60/40 & 63/37?

Is there in easy method to evaluate the solder performance other than
dumping 1000+ pounds of solder and re-filling with the new solder?

Or does it just come down to cost (per pound)?

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