If you are using the Salifert kit, you can add half the solution in the syringe,
shake the vial for 20 seconds, then continue drop by drop. When you color
changes to blue, give it another 20 seconds or so to see if it stays blue. If
it begins to look pinkish-purple again, add another drop to make it officially
blue. That is your true result.

ppm is not the same as meq/L.

I love the Salifert kits for Alk, Ca, PO4, and Nitrates.

Marc


Mort wrote:

I have a follow up question. This is prolly a good one for Boomer but I'll
throw it out there for everyone.

For these titration kits, has anyone ever tried adding multiple drops at
once?

For example, in the calcium test kit, you are looking at at least 20 drops
of the third solution before your color will change. (assuming your Ca is
close to where it should be)

The directions say, add one drop, mix. Add another drop, mix. etc etc...

I did follow those directions, however, what would the effect be if you
added 15 or 20 drops right off the bat, mixed, and then did one drop at a
time?

Would it still be the exact same reading if you did it one drop at a time?

~Mort

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