Hanna Instruments Digital Seawater Refractometer

[Aqua Keepers]

Has anyone used it?

http://www.marinedepot.com/ps_viewI...lt1&utm_content=mdhflb2lt1&utm_campaign=mdhfl

 

[Aqua Keepers]

Found this info on reefbuilders

http://www.reefbuilders.com/2009/08...er-refractometer-compensates-for-temperature/

 

[sedor]

I don't have one, i'd like one it's a very popular instrument to test your PO4 and will give you much more precise numbers than a liquid test kit. I'm waiting to get mine until I start a bacterial dosing regiment.

 

[Doahh]

This one is a digital refractometer not a po4 test.

 

[lecher]

I wonder if it can be calibrated with the Pinpoint calibration solution? The description says to cal. with distilled water. If it can only be calibrated with distilled water, I be concerned about its accuracy. I think I'll just stick to my $30 refractometer.

 

[jtma508]

This seems like over-kill to me. Of all the stuff we use in this hobby a decent optical refractometer is a simple to use, fail-safe device. It's all but impossible to misread. You can get a decent one for under $60. And no batteries required. I just don't see the advantage.