Measuring salinity

[AndrejSk]

Hello,

I have Profilux 3.1N and would now like to measure salinity in my reef.

I know, that I need to buy a probe and expansion card, but I don't know which are the right ones. Can you please help me?

Do I also need to buy some calibration solutions and if yes, I would also like to know which ones I need.

Thank you for any kind rsply and help.

Thank you and Br,

Andrej

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[-Aaron-]

You need the conductivity expansion card and probe for saltwater as well as the 50ms calibration fluid, which is for saltwater also. There is a freshwater alternative so you need to ensure that where you are buying it from gives you the correct one. It should specify if ordering online.

[AndrejSk]

Hello,

Thank you for your answer; anyway; I'm still not sure, what is correct; there are two conductivity expansion cards; which one do I need:
http://www.ghl-store.com/erweiterungskarten/phredoxoxygen/plm-condf.html
http://www.ghl-store.com/erweiterungskarten/phredoxoxygen/plm-conds.html

About electrode; is this one correct:
http://www.ghl-store.com/sensoren/ph-redox-sauerstoff/conductivity-electrode-platinum.html

And for calibration; is this the right solution?
http://www.ghl-store.com/sensoren/kalibrierfluessigkeiten/pl-cali50ms.html

Thank you a lot for your help again :)

[Matthias]

PLM-CondS + 50mS + Platinum is correct