Where to buy TDS meter?

[catohcat]

I'm looking to buy a TDS meter. Any bro here knows where got selling and draftly how much is one (Hanna brand,..)? I asked C328 but they dont sell.

[celticfish]

This is something I been hunting for too!
I've got the brochure for the Dennerle one and its great!
I think Dymax copied thier pH pen like the Dennerle one.
Its water resistent/proof.
This is a great feature as I lost my last pH pen when I droppeditin the tank!

Hopefully someone can help!

[carlfsk]

I think Petmart do sell, not expensive. Maybe $40.