Hanna vs Red Sea Nitrite Testing

[psumms]

Hi all, nearing the end of the cycle on a new tank. I have a Hanna Nitrite ULR tester that to-date won't give a reading as every test reports '200' (out of 0-200 ppb range). My Red Sea Nitrite tests are coming in between 0.5 and 1 ppt. I believe I should trust the Hanna (non)reading, but that's quite a difference, no?

 

[Quietman]

Sounds consistent...ppb is 1000x lower than ppm (which I think is what you meant). So 200 ppb is .2 ppm so it's indicated out of range.

 

[psumms]

Not sure that answers the question? Surely that would be a reading of 50-100 ppb on the Hanna if the Red Sea tests were anywhere near accurate?

 

[Quietman]

.5 to 1 ppm equals 500 to 1000 ppb. They read out in different ranges.

 

[Terry Brown]

sorry posted to wrong thread.

 

[psumms]

Quietman is right, my apologies, I just realized its pp-million not thousand as I was calculating.

 

[Quietman]

No worries. You should see me trying to convert Celsius to Fahrenheit. :)