M
Mike Smith
Guest
All over ebay from Hong Kong are these yellow stick Pen PH Meter's. Has anyone bought one? Are they ok? Do they work? They cost less then 10 bucks.
http://www.ebay.co.uk/itm/300724436925?ssPageName=STRK:MESINDXX:IT&_trksid=p3984.m1436.l2649
http://www.ebay.co.uk/itm/300724436925?ssPageName=STRK:MESINDXX:IT&_trksid=p3984.m1436.l2649