Handheld pH meter H-SERIES H130

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)