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DimaD

DimaD

Member
Jan 14, 2025
33
I just tested my SN with the Aquarium test. I did it exactly how it was described in the SN Bible thread. But I do not understamd why the first cup (where I put 500ml distilled water and 2,5g of SN) has a yellowish tone.
The 2nd cup looks more like the result it should have(where i put 1ml from cup 1 in it). I tested both cups a second time , to be sure. I will also do the blood test soon.

Cup 1:
20250526 112525

Cup 2:
20250526 112520
 
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WakingNightmare

WakingNightmare

Member
May 1, 2025
47
How's it supposed to look according to the instruction book?
 
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DimaD

DimaD

Member
Jan 14, 2025
33
How's it supposed to look according to the instruction book?
On the thread, the aquarium stripe from the first cup was really red.


You have to scroll down a bit
 
WakingNightmare

WakingNightmare

Member
May 1, 2025
47
On the thread, the aquarium stripe from the first cup was really red.


You have to scroll down a bit
Thanks just took a look, the test strips might behave strangely at high concentration if not designed for that. If you look in your instruction manual that came with them it may have a max value.

It seems according to the bible you need to focus on the second dilution, which is at a known low concentration.
Are your strips for nitrite only or is the last square for nitrates? Just curious why that is so red
 
F

Forveleth

I knew I forgot to do something when I was 15...
Mar 26, 2024
2,244
Did your kit come with its own chart for comparison? How do your results compare to that?
 
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DimaD

DimaD

Member
Jan 14, 2025
33
Thanks just took a look, the test strips might behave strangely at high concentration if not designed for that. If you look in your instruction manual that came with them it may have a max value.

It seems according to the bible you need to focus on the second dilution, which is at a known low concentration.
Are your strips for nitrite only or is the last square for nitrates? Just curious why that is so red
They are not for nitrite only. The first square is nitrate, the second nitrite and the third chlorine
 
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cemeteryismyhome

cemeteryismyhome

Wizard
Mar 15, 2025
671
This is giving me flashbacks to chemistry class (which I enjoyed by the way).
 
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DimaD

DimaD

Member
Jan 14, 2025
33
Did your kit come with its own chart for comparison? How do your results compare to that?
Yes it came with one. the highest colour for nitrite is dark pink to purple. The yellow tone does not match with any of these colours for nitrite on the chart
 
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WakingNightmare

WakingNightmare

Member
May 1, 2025
47
They are not for nitrite only. The first square is nitrate, the second nitrite and the third chlorine
Your first sample is probably off due to high concentration, I'm hesitant to give you a definitive answer since I haven't seen your instruction booklet.

But if pink is positive you can say there's nitrites in there. Personally I would also be concerned that nitrates reacted also
 
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DimaD

DimaD

Member
Jan 14, 2025
33
Your first sample is probably off due to high concentration, I'm hesitant to give you a definitive answer since I haven't seen your instruction booklet.

But if pink is positive you can say there's nitrites in there. Personally I would also be concerned that nitrates reacted also
Yes, that is also a concern of mine. I bought mine from a trustworthy site. Someone here adviced me to buy it there , since they also have a registered office in Germany. Which is great because it did not take long to arrive. Anyways I checked and it says it is Sodium Nitrite and should have a purity of 99%. I hope there is not any Nitrate in there, given the test stipe.
Should I make the test again ?
Your first sample is probably off due to high concentration, I'm hesitant to give you a definitive answer since I haven't seen your instruction booklet.

But if pink is positive you can say there's nitrites in there. Personally I would also be concerned that nitrates reacted also
It could also be because many nitrate tests reduce nitrate to nitrite first, then use a color reaction. If nitrite is already present in high concentrations, it can trigger the color change directly, even if no nitrate is actually there. That is what I heared but I do not know if it is true.
 
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WakingNightmare

WakingNightmare

Member
May 1, 2025
47
Yes, that is also a concern of mine. I bought mine from a trustworthy site. Someone here adviced me to buy it there , since they also have a registered office in Germany. Which is great because it did not take long to arrive. Anyways I checked and it says it is Sodium Nitrite and should have a purity of 99%. I hope there is not any Nitrate in there, given the test stipe.
Should I make the test again ?

It could also be because many nitrate tests reduce nitrate to nitrite first, then use a color reaction. If nitrite is already present in high concentrations, it can trigger the color change directly, even if no nitrate is actually there. That is what I heared but I do not know if it is true.
Yeah I'm not too sure I've never done much research specifically on this, I just know about chemicals in general. If you've got a lot of SN and are still unsure you could try with a different brand of strips, the same as the bible if you can find them would give you some certainty.

To be honest if you're buying from a reputable supplier they would have tested the SN prior to sale, does it have a batch number on the bottle? For many suppliers you can look up their quality certificate on their website using the batch and product code.
 
DimaD

DimaD

Member
Jan 14, 2025
33
Yeah I'm not too sure I've never done much research specifically on this, I just know about chemicals in general. If you've got a lot of SN and are still unsure you could try with a different brand of strips, the same as the bible if you can find them would give you some certainty.

To be honest if you're buying from a reputable supplier they would have tested the SN prior to sale, does it have a batch number on the bottle? For many suppliers you can look up their quality certificate on their website using the batch and product code.
I will. Thanks for the help
 
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sanan23

Member
Oct 2, 2024
47
i think it seems pure. it should be a baby pink color i think. i did my test too and got kinda a similar result but still unsure if pure or not cuz the colorings for nitrate and nitrite are so similar. I posted it on my page. I dont know if i have the guts to go through with it anyways cuz im scared it will be really painful. i hope you are able to feel better.
 
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Stayhomestaysafe

Stayhomestaysafe

Member
Jun 13, 2025
12
I just tested my SN with the Aquarium test. I did it exactly how it was described in the SN Bible thread. But I do not understamd why the first cup (where I put 500ml distilled water and 2,5g of SN) has a yellowish tone.
The 2nd cup looks more like the result it should have(where i put 1ml from cup 1 in it). I tested both cups a second time , to be sure. I will also do the blood test soon.

Cup 1:
View attachment 167853

Cup 2:
View attachment 167854
Did this with mine recently which is 5 years old sat in a vacuum bag and zip bag for most of that time, both turned dark red. Apparently the nitrate test reacts to nitrites present because the test works by reducing nitrates to nitrites so if there was more nitrates present then the nitrite test wouldn't react (as) much if at all.

I was concerned about the concentration so I did a second test and instead of 1g in 100ml I got as close as I could to .5mg ( probably slightly over but not quite 10mg in 500ml and cut the nitrate test off, checked the nitrites and got the same result then checked the cut of nitrate pad on its own and it was very pale pink.

I'll do a third test maybe tomorrow just to be sure with 10mg (ish, scales aren't always spot on) in 1litre and see how that goes.

But so far it looks like (hopefully) it hasn't degraded much if at all)
 

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