Hanna HI98121 digital meter

JasonLion

TFP Expert
Platinum Supporter
LifeTime Supporter
May 7, 2007
37,880
Silver Spring, MD
Welcome to TFP!

Hanna is a reasonably good brand, but few of the multi-function $100 meters last more than a season, if that. If you keep it calibrated the PH and temperature measurements should be fairly good. ORP readings are essentially worthless except in special circumstance.