I use the Lamotte kits for Nitrate, Iron, and Phosphate.

The tests can be a bit involved (multiple reagents/powders/etc.), and take a
bit of time (3-10 minutes to 'cook') but they have the best systems for
reading accurate results.

As to the costs....Like they say when you go to buy a Rolls Royce, if you
have to ask you can't afford it.

No... I made up the Rolls Royce stuff.

"Jim K" wrote in message
. ..
Which brand test kit(s) do you use and why? Are they accurate, easy to
use,
reasonably priced?