H-Series H135 Professional miniLab ISFET pH Meter with Calibration Buffer Set

Hach H135 miniLab Professional, featuring a pocket-size, waterproof, rugged pH meter. Allows for up to a three-point calibration. 15-mL dropper bottle of pH 4, 7, and 10 calibration buffers 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)