handheld pH meter
Hach H130 miniLab One-Point, featuring a pocket-size, waterproof, rugged pH meter. Allows a single point calibration. 15-mL dropper bottle of pH 7 buffer included. Durable non-glass solid-state (ISFET) pH sensor. Replaceable reference electrode. Minimum one-drop sample or calibration buffer volume.
Silicon chip non-glass pH sensor
Stores dry with minimal maintenance
1-Point calibration on Model H130 (suggested range: 5.0 to 9.0 pH)
1, 2, or 3-point cal on Models H135 and H138
Automatic temperature compensation (ATC)