Elementalj
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Order some reagents and another brand of test kit and try for yourself. The Hanna and Redsea have had identical results on my end.
hanna testing kits
- Thread starter drewstaxplaya
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Nibejeebies
R2R is the reason for my Insomia
My suggestion... Cause this threw me for a loop first time I used it too... Slow down what you are doing, and ensure your following the directions to a tee.
It sounds like you may be filling the syringe with reagent to much.
I have the Hana DKH and I use it daily, a Hanna CA that I use weekly. The CA was pretty tricky to figure out why my readings were off from the Red Sea, when I figured it out it wasn't the checker at all, it was the user. And now I get between 5-10ppm between the Hanna and the Red Sea CA Pro.
It sounds like you may be filling the syringe with reagent to much.
I have the Hana DKH and I use it daily, a Hanna CA that I use weekly. The CA was pretty tricky to figure out why my readings were off from the Red Sea, when I figured it out it wasn't the checker at all, it was the user. And now I get between 5-10ppm between the Hanna and the Red Sea CA Pro.
Nibejeebies
R2R is the reason for my Insomia
Powder in the Alk?!? Huh? The Hanna Alk ppm and dKH have Liquid reagents...
SouL_Shaker
Active Member
I call liquid as powder as well. I'm not native speaker.
The reagents that I bought before December used to work well though.
Nibejeebies
R2R is the reason for my Insomia
Ah!!! Sorry there for a second I was thinking a counterfeit reagents or checker
I have the Alk, Cal & Phosphate checkers from Hanna, the only one that is most impossible to use is the calcium checker, the dosage between water and reagent needs to be so accurate that it is impossible to get two times the same result.
Alk and Phosphate ones a very constant and accurate if you do it right.
Alk and Phosphate ones a very constant and accurate if you do it right.
Velcro
2500 Club Member
They are very accurate if you are consistent with testing method. Scratches don't matter if you orient the vial the same way for the "tare" and the actual test. I go as far as to not touch the glass at all after the zeroing in step so I don't smudge the vial. Do not try to use separate vials to zero and to test. Draw a vertical line with a fine point sharpie across both the vial and the checker (above where the vial goes into the checker obviously) so that you are always aligning the vial in the same spot.
I don't know why people put themselves through the trouble with the Hanna alkalinity... Single reagent titration test kits are so easy to use, can be very cheapm, and are generally pretty accurate. I use the API with a wider vial and a 5ml syringe, works great and I can can perform the test from beginning to end in about 15 seconds. Even if you have and like the Hanna, it's a good idea to have one on hand to cross reference or for once you finally grow tired of the more complicated tests 
recess62
Well-Known Member
I don't know why people put themselves through the trouble with the Hanna alkalinity... Single reagent titration test kits are so easy to use, can be very cheapm, and are generally pretty accurate. I use the API with a wider vial and a 5ml syringe, works great and I can can perform the test from beginning to end in about 15 seconds. Even if you have and like the Hanna, it's a good idea to have one on hand to cross reference or for once you finally grow tired of the more complicated tests
I have a hard time with the color charts. I find the Hannah much easier to get a result. If I get a spurious result I will repeat the test and if needed confirm with titration test
Nibejeebies
R2R is the reason for my Insomia
the Hanna Alk checker is a single reagent as well, I find it easy to use, and accurate. I find it much easier to use then any of the tiration color based since they all have such subtle changes for my eyes.I don't know why people put themselves through the trouble with the Hanna alkalinity... Single reagent titration test kits are so easy to use, can be very cheapm, and are generally pretty accurate. I use the API with a wider vial and a 5ml syringe, works great and I can can perform the test from beginning to end in about 15 seconds. Even if you have and like the Hanna, it's a good idea to have one on hand to cross reference or for once you finally grow tired of the more complicated tests
Randy Holmes-Farley
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Or a DIY using a pH meter. Cheaper and as or more accurate than kits.
A DIY Alkalinity Test: By Randy Holmes-Farley
http://www.reefedition.com/a-diy-alkalinity-test-by-randy-holmes-farley/
BCSreef
Well-Known Member
I order the same exact pipettes. It made a huge difference in reproducibility and accuracy. I've worked in labs all my life and it's nearly impossible to measure small volumes with syringes. Just get the pipettes and you'll be very happy with the numbers.
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North Borders
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Are you pressing the button just once after adding the solution? If you press and hold like on the phosphate checkers it will do a countdown and give a false reading. (I think that sends it into calibration mode on the Alk checker)
-Note: this is just for the alk checker. I don't own the calcium one
-Note: this is just for the alk checker. I don't own the calcium one
