Hi Chem Geek

Thanks for checking in!

You're correct - I am using the FAS-DPD test system as you described (using the 10 ml mark and dividing by 2).

The math to get there just doesn't seem to be adding up to me (amt of bleach/bleach strength vs time lapse, etc). That's why I suspected weakened reagent - but don't know the science behind this particular reagent. Again, no mathemagician, like you. D

Is it safe for my kids to swim in? And how in the WORLD could I have a CC level? P