Hanna HI 93728 Nitrate meter

[euphylius]

Our local reefers community bought Hanna HI 93728 Nitrate meter.

Range 0.0 to 30.0 mg/l
Resolution 0.1 mg/l
Accuracy +- 0.5 mg/l +- 10 of reading

First two reefers have 0.0 mg/l readigs, that’s why we have concern about statement in manual:

Seawater measurements can be performed but tend to read lower values. In order to obtain accurate results, it is recommended to compare measurements of seawater samples with a known nitrate - nitrogen content.

Randy, please, do you have opinion about that instrument?

[Randy Holmes-Farley]

I've not seen any tests on them, but here are two threads on such devices:

http://archive.reefcentral.com/forum...hreadid=937411

http://archive.reefcentral.com/forum...hreadid=910644