[ion]

I am looking for a field test (test strips or something similar) to determine total nitrogen in both fresh and stored urine. If you know - please state company and product name.
Also I would be thankful for any information on the fate of the major plant nutrients contained in urine posterior to excretion. I would appreciate any information on relevant literature.
Thank you!

[kevins]

Do you know a company call 'HACH'?

Please search:

www.hach.com