LongBeachReefer562
Community Member
- Joined
- May 19, 2019
- Messages
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I got the inspiration to try using my hanna PO4 checker (HI774) to test Nitrates from taricha's thread "Accurate NO3 Test with Hanna ULR P Checker"
But the directions use HI736 (PPB) and Red SeaNO3 test kit. I have the HI774 and use saliferts N03 kits so I wanted to give this a whirl using what I had on hand. I did some experimenting and modified the directions based on tarichas and to my surprise results have been very promising. Below is what I came up with (Note my No3 is usually between 1-5ppm so I've only been able to test in this range).
Directions:
1. perform salifert No3 test which produces a 1ml sample. (note: I always jot down the result this down to compare against hanna reading)
2. add 9ml of tank water to cuvette and place in HI774 and press C1.
3. once C2 appears remove cuvette and add the 1ml sample from step 1 using a pipette to the cuvette, mix as normal (dont shake) for 60 seconds.
4. place cuvette in checker and press button for C2.
5. multiply result by 10, this is your nitrate reading. Or so I hope.
While the factor of 10 maybe slightly off, ANYTHING is better than having to guess between 2-5ppm. Especially at zero cost (assuming you have the equipment) and minimal extra effort.
I would love to see others run a test and share their feedback, anyone seeing the same thing?
Note: if you dont have the HI774 just wait a week and buy yourself the Hanna N03 checker coming out next week!!!!
But the directions use HI736 (PPB) and Red SeaNO3 test kit. I have the HI774 and use saliferts N03 kits so I wanted to give this a whirl using what I had on hand. I did some experimenting and modified the directions based on tarichas and to my surprise results have been very promising. Below is what I came up with (Note my No3 is usually between 1-5ppm so I've only been able to test in this range).
Directions:
1. perform salifert No3 test which produces a 1ml sample. (note: I always jot down the result this down to compare against hanna reading)
2. add 9ml of tank water to cuvette and place in HI774 and press C1.
3. once C2 appears remove cuvette and add the 1ml sample from step 1 using a pipette to the cuvette, mix as normal (dont shake) for 60 seconds.
4. place cuvette in checker and press button for C2.
5. multiply result by 10, this is your nitrate reading. Or so I hope.
While the factor of 10 maybe slightly off, ANYTHING is better than having to guess between 2-5ppm. Especially at zero cost (assuming you have the equipment) and minimal extra effort.
I would love to see others run a test and share their feedback, anyone seeing the same thing?
Note: if you dont have the HI774 just wait a week and buy yourself the Hanna N03 checker coming out next week!!!!
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