0.00 and 1.00 ppm standards (iron) for Hanna Checker HI721: Iron
Great for testing proper functionality of your Hanna Checker HI721 Checker.
High accuracy with 0.01 pH resolution
Two point fast and accurate calibration
Usable with virtually any electrode that shares the same connector
3000 hours of battery life
HI 1270 small diameter probe fitseasily into a ...
Reagent kit for 25 Chlorine tests Range: 0.00 to 2.50 mg/L
The HI98100 Checker Plus is the next generation of the original Hanna Checker pH tester. The Checker is the most popular pH meter in the world with over 1 million meters used since its introduction in 1991. From students to resear...