Calcium Test Kit Readings

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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that would be one more drop more than i assumed or two or three. there was
a discussion thread on this CA test at the aqualink web forum i think it was
that said the "Wham" change(meaning, the second it goes to blue, even though
it doesnt end up totally blue and may slide back to pinkish)contradicts the
instructions by like 5 to 10 drops at times because the instructions says
when it turns Clear blue, which is like in some case 10 drops after the
initial change, and then theres that blue color that your talking about that
is the first stable reaction from the pink, then there is the blue that i am
talking about which i believe was the general assumption of the proper drop
to go by according to that thread, the drop that does the "Bang, Its Blue"
Drop, even though it may slump back to pinkish. However, i think i know
what your thinking, as a scientist would think, when the water loses its
buffer capacity, it STAYS blue right? that makes more sense to me too.

wolfhedd.

dont worry guys, the salifert is easy, and i would stir it for like 20
seconds as well if you add half initially because that stuff is hard to mix
with H2O thouroughly.


"Marc Levenson" wrote in message
...
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

--
Personal Page: http://www.sparklingfloorservice.com/oanda/index.html
Business Page: http://www.sparklingfloorservice.com
Marine Hobbyist: http://www.melevsreef.com