Is there something wrong with the Milwaukee PH pen other than it only costs about $20 brand new from ebay? :thumbsup:

You don't want the ones with the metal probes. :icon401:
Ocotillo Reviewed by Ocotillo on . Cheap TDS/PH meter? Anyone know where to get (online) a relatively cheap TDS and PH meter? ~40-50$ each? Local hydro store wanted 70$ for PH and 110$ for TDS!!! Hannas seem to be what people go with, but they are pricey! thanks. Rating: 5