Hanna Marine Nitrate Checker HI781

[IamJoHo]

Anyone heard any info on this? Wondering when this might be released. I cant find much information about it. https://www.hannainst.com/marine-nitrate-checker-hi781.html

 

[taricha]

Range	0.00 to 5.00 ppm (as NO₃ – )
Resolution	0.01 ppm
Accuracy @ 25°C/77°F	±0.25 ppm ±2% of reading @ 25 °C (77 °F)

Lol at that resolution vs the accuracy.
They aren't wrong, just easily confusing.

 

[Miller535]

I have been waiting for this to come out. But a little disappointed that the range is only 0-5ppm. Would only really be useful to someone who is running a ULN system. Which is not most of us. Kind of wish it would go 0-10ppm.

 

[ReefLab]

wow max of 5ppm.. id almost go as far to say thats useless.. needs to read up to 20ppm IMO.

 

[Joedubyk]

salifert is sipmly the best in my experience. it has proven to be really close in accuracy takes 3 minutes, cheap, and at least has a good range. this seems ONLY useful for ULNS

 

[Rimsky]

Anyone heard any info on this? Wondering when this might be released. I cant find much information about it. https://www.hannainst.com/marine-nitrate-checker-hi781.html

Any news on this?

 

[IamJoHo]

Any news on this?

Saltwateraquarium.com now has them on their site but not available yet. You can sign up to get notified when they receive them. Also the Hanna PH checker.

 

[2_much_junk_in_the_sump]

0-5ppm!? I was so excited for this. What a huge disappointment.

 

[reef / aholic]

 

[BZOFIQ]

I missed the 0-5ppm initially and have been awaiting release. Now that I know I'll pass.

 

[intricate_reefer]

Yes the 5ppm Max is disappointing. I’m sure they will have dilution instructions to get higher readings. Hope they just come out with a normal ranged unit as well. Maybe up to 15-20ppm.

 

[nereefpat]

For those upset about the 0-5 range, why not simply dilute your sample 50/50? Then you would have 0-10.

 

[nereefpat]

lol. @intricate_reefer beat me to it.

 

[Randy Holmes-Farley Verified Community Expert]

Dilution may not be trivial.

Nitrate tests typically suffer from substantial chloride interference and somehow likely need to be diluted with the same chloride level water without nitrate.

 

[BZOFIQ]

For those upset about the 0-5 range, why not simply dilute your sample 50/50? Then you would have 0-10.

Dilute it with RO? Isnt the test designed to work on saltwater?

 

[Randy Holmes-Farley Verified Community Expert]

This is what the Hach test kit says about it:

https://www.hach.com/asset-get.download-en.jsa?id=7639983736

Chloride concentrations above 100 mg/L cause low results. The test can be used at high chloride
concentrations (seawater) if a calibration is made with standards that have the same chloride
concentration as the samples (refer to Seawater calibration on page 5).

FYI, seawater is about 19,000 ppm chloride

 

[nereefpat]

Right, dilute with saltwater would probably be best.

 

[BZOFIQ]

Right, dilute with saltwater would probably be best.

Saltwater which has to be tested and confirmed to be void of nitrates. yeah.....no

 

[piranhaman00]

Saltwater which has to be tested and confirmed to be void of nitrates. yeah.....no

Yes just freshly made saltwater lol

SaltwaterQuairum said that Hanna told them (he said she said?) that the range can be extended to 0-50ppm with dilution

 

[nereefpat]

Saltwater which has to be tested and confirmed to be void of nitrates. yeah.....no

It should be easy for you to use some make up water. You could make some up and store it in a jar.