The Apera PH850-HT (AI5564) is a professional handheld pH meter designed for high-temperature liquids and chemically aggressive solutions. It includes the Swiss LabSen 863 electrode featuring a chemically resistant PHY glass membrane, PTFE ring junction, and Silver Ion Trap reference system. Its electrode supports measurements at temperatures up to 130°C, while the IP57-rated meter body and foldable stand support field and benchtop testing.
• Brand: Apera Instruments
• Model / SKU: PH850-HT / AI5564
• pH Range / Accuracy: 0–14.00 pH / ±0.01 pH ±1 digit
• Included Electrode: Swiss LabSen 863 pH/temperature electrode
• Electrode Features: PHY chemical-resistant glass membrane, PTFE ring junction, and Silver Ion Trap reference system
• Maximum Solution Temperature: 130°C
• Temperature Compensation: Automatic (ATC) through built-in thermistor
• Calibration: Automatic 1–3-point calibration; recognizes five standard buffers
• ORP Capability: ±1,000 mV with separately purchased 301Pt-C electrode
• Protection Rating: IP57 with protective silicone cover
• Additional Features: Electrode self-diagnostics, slope display, stable-reading indicator, and foldable stand
• Power Supply: Standard AA batteries
Key Advantage: Its specialized LabSen 863 electrode supports reliable pH measurements in hot and chemically aggressive solutions up to 130°C. The replaceable BNC-connected electrode and rugged meter body provide flexibility for demanding laboratory and commercial quality-control applications.