How very interesting. I wish the full article was available, so that we could get acquainted with the methodology. I am assuming that they have found a way to do without a spectroscope: they are probably able to determine the nitrate content based on just two wavelengths (235 and 275nm), and are using a dye (Orange G) as a color filter. Very interesting approach, but there are many questions. In particular, Orange G is used as a pH indicator which changes color at pH 9. Their results must have been unstable depending on pH value (unless they are also adding a pH buffer to stabilize it). It would be also very interesting to look at the math they are using to extract the nitrate and nitrite values based on just two datapoints. Potentially, this is a very DIY-able project, can be something like a Hanna checker: take the sample, calibrate the device, add dye and buffer, read the result.
Parameter moniter business idea
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Malcontent
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Yes, it was the new UV-C LEDs that enabled the development of a new generation of nitrate probes which have been on the market since 2022. Previously, they used deuterium bulbs to generate the UV light. The probes don't require any reagents.
Nitrate absorbs at 235 nm while DOC absorbs at 235 nm and 275 nm so they measure both and subtract the DOC value to get nitrate concentration.
Deep SUNA Ocean Nitrate Sensor | Sea-Bird Scientific - Overview | Sea-Bird
Deep SUNA Ocean Nitrate Sensor
Jamie814
Active Member
Yes, Thrive Aquatics, they took 10's of thousands from LFS's with a promise of an advanced testing machine, promoted themselves with huge expensive parties at trade shows then went bankrupt and no machine was ever released. lol
Solo McReefer
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codycolina707
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Not tryna be negative but they do have Salinity ph and temp sensors for about 100 bucks on Amazon I think the main thing people like about stuff like apex is it being able to turn off let's say ato if ph goes too high from kalk or whatever or heater shutting off from it getting too hot
jayden kolonne
Active Member
So you think control is important. I can set up something but dealing with 120 from a 5v controller is going to be hard unless you can find a wall outlet that also has a relay on it.
jayden kolonne
Active Member
I am building the prototype now, however I also ordered a spectrometer from Amazon, I'll test it and tell you if it works well, it may be able to record NO2 NO3 and ammonia. It may also be able be able to read certain minerals.
jayden kolonne
Active Member
Ok I was busy last week but I'm working on it right now. I'll program it and compare to hannas results in an hour or so.
Jonify
Well-Known Member
Hi Jayden! If you haven't tried this before, check out venturekit.ai. It's an AI tool for creating business plans. You tell it in a couple of words what you're trying to do, and then it creates a pretty comprehensive business plan for you, including market research, SWOT charts, marketing plans, staffing plans, budgets, launch roadmaps, everything. You can refine each section by editing your AI prompt on that specific section and re-generating to make it even more accurate and personalized to what you're trying to do. It's super easy. I generated an example one for you based on your original post, attached here.
Good luck!
Good luck!
jayden kolonne
Active Member
No, my mom dragged me shopping right after I started. I am finishing my college apps soon which will clear up time. I am also finding library's in the mean time for some of the sensors.
jayden kolonne
Active Member
Yes, that is a component I am going to test. Concedirning nitrate and nitrite have a 16.999 differnce and ammonia is an additional (roughly) 18 differnce, they should be very easy to tell the differnce in. I did that off the top of my head so please excuse if those numbers are wrong.
GARRIGA
2500 Club Member
Follow your heart but make it make cents. As pointed out by others. Many hidden and unknown costs add up quickly and if priced too low might be hard to justify later the new reasonable price that keeps one able to stay in business while still able to cover their own living expenses. Philanthropy for the ultra wealthy.
jayden kolonne
Active Member
Yet I do have to price them at a competitive price since I'm not well known. I'm working on the ph sensor tommorow. I am also watching alot of YouTube learning how to make an app. It doesn't seem to hard @chatgpt is going to help me alot though.
jayden kolonne
Active Member
So I woke up today at about 4:30 to build the ph sensor. I made the code, but it needs calibration. I have a hanna ph tester and I was wondering if dipping that in white vinegar would damage it. I also would like to dip it in a solution that has about 10 ph. I will dilute both down till they slowly reach 7. Plotting all the points of what hanna reads vrs what the probe is reading with a change of 0.25. I will then input that graph into the code to adjust for those changes.
jayden kolonne
Active Member
So I woke up today at about 4:30 to build the ph sensor. I made the code, but it needs calibration. I have a hanna ph tester and I was wondering if dipping that in white vinegar would damage it. I also would like to dip it in a solution that has about 10 ph. I will dilute both down till they slowly reach 7. Plotting all the points of what hanna reads vrs what the probe is reading.with a change of 0.25. I will then input that graph into the code to adjust for those changes.
