In article 6Nipc.9590$RM.5153@edtnps89,
"Dave M. Picklyk" wrote:

I've been having a really hard time trying to decipher my NutraFin nitrate
test kit results. The color chart is basically a light to dark hue of
purple...the water in my test tube looks more like a fuschia/pink bright
color which doesn't match anything. I usually pull the test tube back a few
inches and the hue changes color and I guess.

I've noticed that Tetra has a kit that I might like better; it has a color
chart that has different color shades from yellow to orange to red. This
might be easier to read.

Any opinions?

Thanx a lot!!!!!!!!!!!!!!!
Dave



I got a Red Sea Marine Lab kit a month ago or so. Can do dozens of tests
for pH, Alkalinity, NH3/NH4, NO3, and NO2. The instructions are very
clear and the charts/chits that come for each test are quite easy to
read. In addition, tests for ammonia, etc. rely not just on a color
comparison, but on further number extrapolation from charts from there
(probably the way they all work). I've not compared this to others,
except for a pH test solution I bought by itself. Even this test alone
is better with the Red Sea. I think it was about $25.