Any experience with AmericanMarine Nitrate Monitore ?

[Jack.lin92]

Hi friends
Does anyone have the experience of using this device?
I want to be aware of the accuracy before buying it.
https://www.amazon.com/American-Marine-Pinpoint-Nitrate-Monitor/dp/B001EHAYUE
Thank you

 

[Reeferdood]

Have heard they are not reliable and to stick with test kits... Even some folks on MD said the same thing...https://www.marinedepot.com/America...ine_Pinpoint_Monitors-AM1123-FITEMOID-vi.html
Read the reviews there...

 

[Gareth elliott]

They are not made for constant submersion in salt water. They can be accurate, but hard to justify the price tag when all it is doing is replacing a test kit. Since cant be used as a monitor.