Quote Originally Posted by urbanfarmer
The trouble is urine has so many things in it and the many bacteria interact with it in so many ways and you could start with X and get Y concentration under Z conditions, but change Z and you have a totally different Y even though you started with the same X in both cases. Your best bet is to use store bought ammonia (clear unscented) and determine the concentration (dilute it) and go from there. Otherwise, your numbers really won't be too helpful to you.
Gee whiz!

There goes my best excuse for rapid beer consumption!
Or maybe not. My duckweed pool seems to enjoy my beer drinking