well here's some bs... I bought this pH meter: http://cgi.ebay.com/New-pH-Meter-Tester-Hydroponics-pH-Mesure-Testeur-Y_W0QQitemZ360192289207QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item53dd2229b7&_trksid=p3286.c0.m14 and I've been using it since day 1. Well I bought some buffer solution out of...