Hanna Marine Magnesium Checker HI783 Problems/Issues

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Are you experiencing issues with your Marine Magnesium Checker (HI783)?

  • Yes - Describe Below

    Votes: 27 90.0%
  • No

    Votes: 3 10.0%

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Wilsonbem

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That doesn’t even make any sense. How could the salt have anything to do with it? It’s testing for magnesium, not sodium chloride lol
I only found out today that salinity affects readings... ie..if the salinity is high then Cal. Mag, Sodium, etc are higher..... it baffled me
 

Reefer_kano

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That doesn’t even make any sense. How could the salt have anything to do with it? It’s testing for magnesium, not sodium chloride lol
She kept telling me because the salt i use is the red sea coral pro that it has a higher concentratuon of magnesium in it.
 

RobertAshby

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Well how bout that.
I tested my water with the checker and tested 1560.
Took a sample in right of way to my LFS and had them test it and it tested 1329.
Any ideas on what i can do now with this.
Cqll hanna? Send it in?
It is an issue with the reagents. No need to send it in, they are sending out replacements. I just received an email a few hours ago to fill out this form to get new reagents: https://pages.hannainst.com/hi783-reagent-issue?utm_campaign=HI783-HI784-Checker-Launch-2022

In the meantime I have been getting pretty good results using 5ml of reagent A.

Hopefully the new reagents are accurate. If they are then I think this will be a pretty good checker.

Edit - Here is the email I received from Hanna:
"Some of our customers reported issues when using our Marine Magnesium Checker® (HI783). We at Hanna, took a deep dive into this problem. We gathered customer feedback and performed extensive testing in our laboratory.

After investigating, we determined that our reagents used in the Marine Magnesium Checker® test were the root cause of this issue. We discovered that one of the chemical raw materials in the reagents has an unexpected degradation over time. This caused customers to experience high readings.

We will send new reagents to customers that purchased a Marine Magnesium Checker® (HI783). The estimated ship date is 6-8 weeks due to production requirements.

To our customers both near and far, we greatly appreciate your patience and understanding during this time. We apologize for any inconvenience that this has caused. We look forward to resolving this matter for you so that you can get back to what matters most, your reef tanks."
 
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Reefer_kano

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It is an issue with the reagents. No need to send it in, they are sending out replacements. I just received an email a few hours ago to fill out this form to get new reagents: https://pages.hannainst.com/hi783-reagent-issue?utm_campaign=HI783-HI784-Checker-Launch-2022

In the meantime I have been getting pretty good results using 5ml of reagent A.

Hopefully the new reagents are accurate. If they are then I think this will be a pretty good checker.

Edit - Here is the email I received from Hanna:
"Some of our customers reported issues when using our Marine Magnesium Checker® (HI783). We at Hanna, took a deep dive into this problem. We gathered customer feedback and performed extensive testing in our laboratory.

After investigating, we determined that our reagents used in the Marine Magnesium Checker® test were the root cause of this issue. We discovered that one of the chemical raw materials in the reagents has an unexpected degradation over time. This caused customers to experience high readings.

We will send new reagents to customers that purchased a Marine Magnesium Checker® (HI783). The estimated ship date is 6-8 weeks due to production requirements.

To our customers both near and far, we greatly appreciate your patience and understanding during this time. We apologize for any inconvenience that this has caused. We look forward to resolving this matter for you so that you can get back to what matters most, your reef tanks."
I tried that link, filled everything out but nothing happens when i hit the summit tab.
Idk if its going thru or not. Do they send you an email once you summit it?
 

mwilk19

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I tried that link, filled everything out but nothing happens when i hit the summit tab.
Idk if its going thru or not. Do they send you an email once you summit it?
Not that I'm aware of. I filled out the form from a link on Instagram the other day but never heard anything afterward.
 

RobertAshby

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I tried that link, filled everything out but nothing happens when i hit the summit tab.
Idk if its going thru or not. Do they send you an email once you summit it?
When I submitted it the form changed to say "Thank you for your submission." No confirmation email.
 

Boogieman

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I just did two tests without the tips and got results of 1675 and 1690 which is better than the 1800+ I have been consistently getting when using the tips, but still ~300 higher than the actual levels. I guess when I use the tips they suck in some air even if I go slowly.
How do you know what the actual level is .. how do you know the Hanna is wrong.??
Thanks
 
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trevorhiller

trevorhiller

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Has anyone gotten replacement reagents? Submitted over a mo ago nothing yet.
I have not yet. They actually still have my meter. They told me they would mail it back with new reagents in 6-8 weeks. That was June 30th.
 

mwilk19

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Right ok I learned that this morning.. but how did you determine the level of magnesium in your tank?
When it became obvious that there were problems with the Hanna checker accuracy I purchased a Salifert magnesium test kit. The last ICP test I did I also tested magnesium with the Salifert and Hanna checker at the same time I took the water samples for the ICP test. When I got the results back the Salifert results were much closer to the ICP results. Hanna was more that 200 mg/L higher.
 

Boogieman

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When it became obvious that there were problems with the Hanna checker accuracy I purchased a Salifert magnesium test kit. The last ICP test I did I also tested magnesium with the Salifert and Hanna checker at the same time I took the water samples for the ICP test. When I got the results back the Salifert results were much closer to the ICP results. Hanna was more that 200 mg/L higher.
Ok . You Used ICP.. i might have to get one of those test kits and send some samples . thank you
 

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