hcl/clorox concentration

[steeranoff]

when doing hcl/clorox on cat cons how do you
Know when the acid won't absorb any more
Pgm's? Could you use the acid on more than
One cat before going to the precipitation stage?
Thanks,
Steve

 

[lazersteve]

Yes you can continue use until the stannous chloride tests very dark.

The theoretical maximums are very high. I don't know what the limits are per liter off the top of my head, but I'm sure you will be safe if you re-use with the color of the stannous test as a guide. When the test spot is very pronounced, it's time to precipitate.

As as side note, remember that the more concentrated your pregnant solution is the more losses you will have with every lost drop, splatter, filtration, spill, etc.

Steve

 

[steeranoff]

thanks,
steve