The Apera PH8500-SS (AI5557) is a professional handheld pH meter designed for direct testing of solid and semi-solid samples, including meat, cheese, dairy products, fruit, dough, and growing substrates. It features the Swiss-engineered LabSen® 753 titanium-body spear electrode, allowing direct sample penetration without slurry preparation. Its reinforced spear glass membrane provides stabilized readings in approximately 15–30 seconds, while the open-and-ceramic double-junction design helps reduce clogging. The meter also features GLP data logging, USB connectivity, and a foldable stand for benchtop use.
• Brand: Apera Instruments
• Model / SKU: PH8500-SS / AI5557
• pH Range / Accuracy: −2.00 to 19.99 pH / ±0.01 pH
• Included Electrode: LabSen 753 titanium-body spear pH/temperature electrode
• Electrode Features: Food-grade titanium body, reinforced spear glass membrane, and double-junction design
• Reading Time: Approximately 15–30 seconds
• Temperature Compensation: Automatic (ATC), 0–100°C
• Calibration: Automatic 1–3-point calibration; recognizes up to 12 buffer types
• Data Storage: 500 GLP records with timestamps and manual or automatic logging
• Connectivity: USB data output and charging
• Protection Rating: IP57 waterproof and dustproof
• Power Supply: 3 × AA alkaline batteries
• Warranty: 3 years for the meter; 6 months for the electrode
Key Advantage: The PH8500-SS enables direct pH measurement in solid and semi-solid samples without preparing slurries. Its durable titanium spear electrode, replaceable probe, and 500-record GLP data logger make it useful for food-processing quality control, substrate testing, and commercial cultivation laboratories.