Dual inline TDS meter

[warr40]

Hey i'm looking for a Dual inline TDS meter for my RO unit.
Does anybody have one that they are looking to sell?
Does anybody know if i can get one at any local stores?

 

[Buckeye Hydro]

The DM1 model is the most common dual inline meter you see out there.

The DM2 costs a little more, but each of the probes on the DM2 can be calibrated independently.

Russ