The Apera PH850-SS (AI5543) is a professional handheld pH meter designed for direct testing of food, plant tissue, meat, cheese, fruit, dough, and semi-solid growing media. It includes the Swiss-technology LabSen 753 food-grade titanium spear electrode, which allows direct insertion without preparing a slurry. Its reinforced glass membrane and open double-junction design help prevent breakage and clogging, delivering stabilized readings in approximately 15–30 seconds.
• Brand: Apera Instruments
• Model / SKU: PH850-SS / AI5543
• pH Range / Accuracy: 0–14 pH / ±0.01 pH
• Temperature Range / Accuracy: 0–80°C / ±0.5°C
• Included Electrode: LabSen 753 food-grade titanium-body spear pH/temperature electrode
• Electrode Features: Reinforced S-type glass membrane, approximately 10× stronger than conventional glass, and open-and-ceramic double junction
• Reading Time: Approximately 15–30 seconds
• Calibration: Automatic 1–3-point calibration; recognizes pH 1.68, 4.00, 7.00, 10.01, and 12.45
• Protection Rating: IP57 — dustproof and suitable for temporary immersion
• Additional Features: Automatic temperature compensation, electrode diagnostics, foldable stand, and stable-reading lock
• Power Supply: 3 × AAA batteries
• Warranty: 3 years for the meter; 6 months for the electrode
Key Advantage: Enables direct pH testing of solid and semi-solid materials without slurry preparation. Its durable, replaceable titanium spear electrode makes it useful for food processing, plant-tissue testing, and growing-media quality control.