http://cgi.ebay.com/Digital-Test-pH...ultDomain_0?hash=item3a596c790b#ht_3091wt_974
There are $300 ph meters and this one. and then hundreds between these two. Why is that? Is there any reason. they all do the same thing. work between like 32F-122F, get it accurate to 0.1 ph, and works with ph between 0-14.
WHAT'S THE DIFFERENCE!!!???

There are $300 ph meters and this one. and then hundreds between these two. Why is that? Is there any reason. they all do the same thing. work between like 32F-122F, get it accurate to 0.1 ph, and works with ph between 0-14.
WHAT'S THE DIFFERENCE!!!???
