cheap ppm / ph meters...

Hey I had a link but lost it.. Somewhere around here you can get a ppm meter for around 15 bucks.. I'm looking for anything cheap really.. just has to work.. If you guys know where I can find one cheap or can post where you got yours for the low I'd appreciate it.. thx

The cheapest I have ever seen is $35 and those are the kind the RO dealers sell. They are inline and give you a before and after reading in ppm to evaluate the membrane.

http://secure.sciencecompany.com/HM-Digital-Economy-TDS-Meter-TDS-EZ-P16349C679.aspx

just bought this one here.. its 15 bucks just need a ph meter now.. I'll let you guys know how this thing works when it gets here in 5-7 bus days

Ebay, i picked up a MH for $25 and a milwakee PH for 40bucks, go for a recognizable name, or you will buy a replacement sooner rather than later, i just broke my PH today but its been going strong for a year now

this is the meter i have/had and its rock solid OMG look at the price, brand name eqiupment
http://cgi.ebay.com/Milwaukee-pH600-Digital-pH-Tester-Meter-Pocket-Pen-New_W0QQitemZ270384799124QQihZ017QQcategoryZ4678QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

same seller has a hanna TDS meter for 13bucks! al;though i wouldnt recommend it, it only goes up to 999, for a few more dollars you can get one that measures up to 1999ppm