Review on Hach H135 Professional MiniLab Calibration by Brad Jeffress
Works perfectly! Not as fragile as these other pH testers.
Works great! It's not as fragile as the other ph testers with a very thin wire that breaks if you accidentally tap it lightly on something.
- One point calibration on model H130 (recommended range: 5.0 to 9.0 pH)
- Big and bulky
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