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Old 15-12-2004, 02:00 AM
Allyb
 
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Default red sea nitrate test question

I have three questions about my nitrate test kit. I've written red sea, but
I thought I would give you folks a try as the response may be quicker

1. How do you read the expiration date? It's just impressed into the
cardboard, and it's almost impossible to read, but I think it says 06 5 15
There could be something between the 06 and 5, but I can't make it out.

2. In reagent bottle A, there is a bunch of chunks that settle to the
bottom of the bottle. They are black and grey, kinda look like sand, and
don't mix in no matter how much I shake. Is this normal?

3. And this is the most important question. The instructions say to check
the color after 5 minutes, but I've noticed that the solution continues to
darken for an hour or so. The final color is approx 10ppm higher than the 5
minute color. Is it really right at 5 minutes?

I had a bad kit that led to a nitrate poisoning incident, so I'm prone to
being paranoid now.

Thanks for any input you can offer! Allison



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Old 15-12-2004, 02:24 AM
 
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On Tue, 14 Dec 2004 20:00:33 -0500, "Allyb" wrote:

I have three questions about my nitrate test kit. I've written red sea, but
I thought I would give you folks a try as the response may be quicker

1. How do you read the expiration date? It's just impressed into the
cardboard, and it's almost impossible to read, but I think it says 06 5 15
There could be something between the 06 and 5, but I can't make it out.

2. In reagent bottle A, there is a bunch of chunks that settle to the
bottom of the bottle. They are black and grey, kinda look like sand, and
don't mix in no matter how much I shake. Is this normal?

3. And this is the most important question. The instructions say to check
the color after 5 minutes, but I've noticed that the solution continues to
darken for an hour or so. The final color is approx 10ppm higher than the 5
minute color. Is it really right at 5 minutes?

I had a bad kit that led to a nitrate poisoning incident, so I'm prone to
being paranoid now.

Thanks for any input you can offer! Allison


Had a similar problem with their last nitrate test kit. I returned it
to the LFS where I purchased it and exchanged it for a Seachem kit.
The first Red Sea nitrate test kit that I purchased was bang on with
the readings last year. Keep us informed as to what Sea Chem tells
you.
I usually take my reading after 10 min. or so. The only thing that I
look for in my results is not to be limiting in nitrates. 5-20ppm
seems to be ok for my plants.

take care

PS


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