The Apera PH850 (AI5510) is a professional handheld pH meter designed for routine nutrient-solution testing, fertigation, reservoir monitoring, and irrigation-water quality checks. It includes the 201T-F combination pH/temperature electrode with a lithium-glass membrane and ceramic-fiber junction designed to minimize clogging. Its IP57-rated waterproof body, automatic temperature compensation, and foldable stand support both portable field testing and benchtop use.
• Brand: Apera Instruments
• Model / SKU: PH850 / AI5510
• pH Range: 0.00–14.00 pH
• Accuracy: ±0.01 pH (±1 digit)
• Included Electrode: 201T-F 3-in-1 pH/temperature combination electrode
• Electrode Features: Lithium-glass membrane with ceramic and fiber-filament junction
• Calibration: Automatic 1–3-point calibration; recognizes five standard buffers
• Temperature Compensation: Automatic (ATC) through the electrode's built-in sensor
• Protection Rating: IP57 — dustproof and protected against immersion up to 1 metre
• Display: Simultaneous pH and temperature readings with stability indicator
• Additional Features: Foldable stand, rubber grip sleeve, and electrode-condition diagnostics
• Included Accessories: pH 4.00 and 7.00 buffer solutions (50 mL each), screwdriver, manual, and hard-shell carrying case
• ORP Capability: Supported with a separately purchased 301Pt-C ORP electrode.
Key Advantage: The PH850 combines professional pH accuracy with IP57 protection and benchtop functionality. Its replaceable BNC-compatible electrode and clog-resistant design make it practical for daily nutrient-solution testing across commercial cultivation facilities.