Twentyinches: Hanna makes some pretty crummy meters. My first meters were Hanna and they only lasted for 6-8 months then quit working entirely.

PC :smokin:
PharmaCan Reviewed by PharmaCan on . Good to go with this meter? Hey guys, What do you think of this unit? I mean I'm a little confused as to what the diff between ppm, EC, and TDS is... it's all greek but this has it all so I figured I would be ok with it. Also if anyone would like to explain the diff with all that, that would be sweet! :D HANNA HI991404 pH/EC/TDS/T Monitor, GroChek HI 991404 - (eBay item 280163600407 end time Oct-25-07 22:34:12 PDT) Rating: 5