Hanna nitrate checker!

infinite0180 · Jun 19, 2020

f8th said:
For everyone hoping for high range I would think you could trade a little accuracy for range by diluting the sample. Use 1ml tank water and 9ml fresh saltwater, and multiply the result by 10 to get a 0-50 range, or 2ml sample and multiply by 5 for 0-25, 5ml and x2 for 0-10?

Yea, thats what i was thinking. We do that all the time in the lab for other testing. I dont see why it wouldnt work here...

piranhaman00 · Jun 19, 2020

IMO, anything over 5 ppm can be read using salifert test. I think 0-5ppm would be helpful to the ULN systems. Of course, 0-20 would be ideal.

hllb · Jun 19, 2020

infinite0180 said:
Yea, thats what i was thinking. We do that all the time in the lab for other testing. I dont see why it wouldnt work here...

Too easy to make an error with that low of a sample size. I don't use the CA checker because of it. Even though I'm very careful (and worked with Hanna to make sure I was doing it correctly) it just doesn't give consistent results.

0-5 just seems way too low. I really don't need to know the precise number if it's under 5 and I wouldn't think there are enough ULN systems to make a worthwhile sales forecast. I have issues reading Salifert in the 10 to 25 range. Nyos is better, so that's what I use. if this was 0-20 or 0-30 I would probably buy it as long as it wasn't a dilute test like the CA one.

infinite0180 · Jun 19, 2020

hllb said:
Too easy to make an error with that low of a sample size. I don't use the CA checker because of it. Even though I'm very careful (and worked with Hanna to make sure I was doing it correctly) it just doesn't give consistent results.

0-5 just seems way too low. I really don't need to know the precise number if it's under 5 and I wouldn't think there are enough ULN systems to make a worthwhile sales forecast. I have issues reading Salifert in the 10 to 25 range. Nyos is better, so that's what I use. if this was 0-20 or 0-30 I would probably buy it as long as it wasn't a dilute test like the CA one.

Yea i currently use NYOS when i actually feel like testing. Usually i dong even bother with it...

piranhaman00 · Jun 19, 2020

hllb said:
Too easy to make an error with that low of a sample size. I don't use the CA checker because of it. Even though I'm very careful (and worked with Hanna to make sure I was doing it correctly) it just doesn't give consistent results.

0-5 just seems way too low. I really don't need to know the precise number if it's under 5 and I wouldn't think there are enough ULN systems to make a worthwhile sales forecast. I have issues reading Salifert in the 10 to 25 range. Nyos is better, so that's what I use. if this was 0-20 or 0-30 I would probably buy it as long as it wasn't a dilute test like the CA one.

infinite0180 said:
Yea i currently use NYOS when i actually feel like testing. Usually i dong even bother with it...

NYOS for me does not match the color chart, the orange of the chart is much lighter than actual. Do you agree?

jschultzbass · Jun 19, 2020

piranhaman00 said:
NYOS for me does not match the color chart, the orange of the chart is much lighter than actual. Do you agree?

I see what your saying, it doesn't match exactly but I've tried every one out there and Nyos is by far the best higher range kit.

jschultzbass · Jun 19, 2020

I'm in the same boat that a 0 - 5 is only useful for people running ULN systems, which is getting more and more rare since most data now is saying closer to 10 is better. I don't want to have to dilute either. I don't know who they were listening to to make it 0 - 5 but they will miss most of the market with that range.

hllb · Jun 19, 2020

piranhaman00 said:
NYOS for me does not match the color chart, the orange of the chart is much lighter than actual. Do you agree?

I'm generally under the 12 mark, so not in the 'orange' range for the test. I find the yellows to match pretty well.

Miller535 · Jun 19, 2020

itgoeson said:
Just saw on Facebook (post from Hanna itself) that the range is not yet final. Kind of hoping saltwateraquarium.com has old specs!

Being that Hanna has called it "Low range", and they have had their specs out for a while, it's not going to change and be above 5ppm. Look at all their other colormeters that are labeled low range, they are very low. But I do suspect that they will come out with a high range tester later

hllb · Jun 19, 2020

Miller535 said:
Being that Hanna has called it "Low range", and they have had their specs out for a while, it's not going to change and be above 5ppm. Look at all their other colormeters that are labeled low range, they are very low. But I do suspect that they will come out with a high range tester later

They don't have the specs on their website, do they?

piranhaman00 · Jun 19, 2020

hllb said:
I'm generally under the 12 mark, so not in the 'orange' range for the test. I find the yellows to match pretty well.

Yes the yellows do match well. The oranges are bad though. I have a predatory tank in the 50ppm range and I got NYOS for that tank specifically. The test is useless for that range.

hllb · Jun 19, 2020

piranhaman00 said:
Yes the yellows do match well. The oranges are bad though. I have a predatory tank in the 50ppm range and I got NYOS for that tank specifically. The test is useless for that range.

That's a bummer. I prefer it over Salifert. Never tried the Red Sea one.

piranhaman00 · Jun 19, 2020

hllb said:
That's a bummer. I prefer it over Salifert. Never tried the Red Sea one.

Salifert is much easier and faster for me. I was very impressed with NYOS low range, and I like having the control test.

hllb · Jun 19, 2020

piranhaman00 said:
Salifert is much easier and faster for me. I was very impressed with NYOS low range, and I like having the control test.

I have issues telling between the pinks, even when I use the low range option of the test. If it's over 5, they all look the same to me LOL.

Miller535 · Jun 19, 2020

hllb said:
They don't have the specs on their website, do they?

They did before, I would imagine they still do.

hllb · Jun 19, 2020

Miller535 said:
They did before, I would imagine they still do.

Not that I can find. Since it hasn't been released yet, they don't have any specs or documentation on their site for HI781. And they did tell people who asked that the range isn't finalized yet.

Miller535 · Jun 19, 2020

hllb said:
Not that I can find. Since it hasn't been released yet, they don't have any specs or documentation on their site for HI781. And they did tell people who asked that the range isn't finalized yet.

They definitely had it before. And like I said, they call it a "low range nitrate test". Low range is not going to be anywhere near the range that the people on this thread want. All of their other Low range test are in ULN range.

itgoeson · Jun 19, 2020

My theory is that they got negative feedback on the 0-5 range so are working out how to dilute the sample to increase the range. I bet it will come out with a higher range (like 0-20) but require dilution like their CA test. That’s the square my chips are on!

Miller535 · Jun 19, 2020

itgoeson said:
My theory is that they got negative feedback on the 0-5 range so are working out how to dilute the sample to increase the range. I bet it will come out with a higher range (like 0-20) but require dilution like their CA test. That’s the square my chips are on!

I think they will come out with a "high range" later.