[APD] RE: Test kits

[Bill Wichers <billw at waveform_net>]

> Speaking of test kits, I need a good Iron test kit within a reasonable
> budget range.  Right now I have an Iron test kit from (I believe)
> Aquarium Pharamceuticals.  The test is incredibly hard to read for me,
> the difference from 0 to 0.1ppm would probably be pretty damn close to
> impossible for me to tell.  Can anyone recommend a good Fe test kit
> (within a reasonable price, $70 listed at Tom's suggested sight is _way_
> too much for me ;-)?

Seachem's Fe kit works reasonably well and is inexpensive. It also comes 
with a reference solution which is very useful for testing the test kit. I 
find the color comparison to be a bit troublesome (I'm not a big fan of 
that type of test in general), but it has a large color strip that is 
spread out enough that you can get a decent reading from it.

What I would *love* to see is some actual spectral absorption/transmission 
plots for these types of test kits published by the manufacturers to allow 
DIY and 3rd party electronic readers for the color-change type tests (hint, 
hint Seachem ;-).

        -Bill


*****************************
Waveform Technology
UNIX Systems Administrator

_______________________________________________
Aquatic-Plants mailing list
Aquatic-Plants at actwin_com
http://www.actwin.com/mailman/listinfo.cgi/aquatic-plants