Hanna allalinity checker
- Thread starter muggle0981
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It certainly makes it easy to get an exact number for you alkalinity. If you like using the other testers you will probably like the ALK checker
EricR
2500 Club Member
I love it (Hanna Alk dKH checker),,, but I'm color blind.
Beyond that, to me, it's still faster/easier than titration tests and mine has matched well with other tests when compared.
Beyond that, to me, it's still faster/easier than titration tests and mine has matched well with other tests when compared.
edsbeaker
Grandma Has A Reef Obsession
Hanna alkalinity test is the easiest of all the Hanna testers, and seems VERY accurate. Push button to get C1, place cuvette with 10 ml. Tank water, push button to get C2 add reagent to cuvette, push button one last time to get instant result. 3 quick steps, 30 sec. and you are done! I love mine!
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bitstream
Active Member
It’s the best all tester on the market… but one lesson I learned is to make sure you keep the lid on the reagent TIGHT! I apparently didn’t and eventually got wonky readings because it went bad. That little reagent lid liner is in the box for a reason!
ScottJ
Well-Known Member
I read someplace on here that you should keep the reagent in the fridge. I think it may have been Lasse who did a wright up.
Randy Holmes-Farley
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How do you know it is very accurate?
edsbeaker
Grandma Has A Reef Obsession
Hi Randy, I’m truly scared of you!
You are a person with a lot of knowledge and it’s scary being called out by you.Please be easy on me!!! I’m not joking…I’m serious!
In my defense I did say “seems to be very accurate” not a definitive “know it is very accurate”!
In my experience the checker matches up really well with my Neptune Trident, and the results are also in line with the alkalinity that my salt is supposed to mix up to. When numbers seem off I feel it is my error if I didn’t wipe smudges off cuvettes or there are air bubbles in the sample. When I redo the test the new results seem in line with what I would expect.
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Hanna hr nitrate ulr phosphate and alk. Salifert for calcium. I love the alk tester especially when I'm dialing in a system and testing a lot. I can't attest to its accuracy as it's the only alk test I have but it sure is easy to use to keep things consistent which is more important than the actual number IME.
I too refrigerate the reagents.
I too refrigerate the reagents.
EricR
2500 Club Member
Dr. Randy, sir:
In your opinion, is the Hanna Alkalinity (dKH) Checker less accurate than titration tests?
If you have any write-ups on this posted anywhere, I'd be interested.
*just curious based on personal inference from some of your posts
For me, mine (Hanna) has compared well to other tests, like Red Sea and Salifert, when I've (occasionally) compared same sample.
*I also check (same sample) when I send ICP tests (2-3 times/year)
In your opinion, is the Hanna Alkalinity (dKH) Checker less accurate than titration tests?
If you have any write-ups on this posted anywhere, I'd be interested.
*just curious based on personal inference from some of your posts
For me, mine (Hanna) has compared well to other tests, like Red Sea and Salifert, when I've (occasionally) compared same sample.
*I also check (same sample) when I send ICP tests (2-3 times/year)
BriDroid
Active Member
I ended up selling my Hanna alkalinity and calcium checkers. I replaced them with Salafert. My main reasons for the alkalinity is the cost and the issues with the reagent going bad. The calcium was just a pain. Worked well with distilled water, but too much going on.
thedon986
Well-Known Member
I had an open alk reagent kept in the refrigerator for many months that reads the same as one I just opened. The cold storage mitigates the issue with it going bad I believe.
Randy Holmes-Farley
Reef Chemist
Staff member
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Excellence Award
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Article Contributor
R2R Research
My Tank Thread
Hi Randy, I’m truly scared of you!
Please be easy on me!!! I’m not joking…I’m serious!
In my defense I did say “seems to be very accurate” not a definitive “know it is very accurate”!
In my experience the checker matches up really well with my Neptune Trident, and the results are also in line with the alkalinity that my salt is supposed to mix up to. When numbers seem off I feel it is my error if I didn’t wipe smudges off cuvettes or there are air bubbles in the sample. When I redo the test the new results seem in line with what I would expect.
Lol. Don’t de afraid. I meant it as a legit question. I just wondered if you checked it against a known standard or something like that.
I think it is a perfectly acceptable tool for reefers, but I’d also put user issues into the list of things that give off answers, such as old reagents, cuvette scratches, etc.
