The Apera PH8500-MS (AI5554) is a professional handheld pH meter designed for precise measurement of small-volume liquid samples. Its Swiss-made LabSen 243-6 pH/temperature electrode has a slim 6 mm diameter and measures samples as small as 60 µL with the included semi-micro container. Automatic temperature compensation, GLP data logging, and USB data output make it suitable for laboratory testing, tissue culture, nutrient formulation, and commercial cultivation quality control.
• Brand: Apera Instruments
• Model / SKU: PH8500-MS / AI5554
• pH Range / Accuracy: 0–14 pH / ±0.01 pH
• Minimum Sample Volume: 60 µL with included micro-container; over 0.2 mL for standard small-volume testing
• Included Electrode: Swiss LabSen 243-6 pH/temperature combination electrode, 100 × 6 mm
• Temperature Range: 0–100°C with automatic temperature compensation
• Calibration: Automatic 1–3-point calibration; recognizes pH 1.68, 4.00, 7.00, 10.01, and 12.45 buffers
• Data Storage: 500 GLP records with manual or automatic storage
• Connectivity: USB data output for PC transfer
• Protection Rating: IP57
• Power Supply: AA batteries
• Warranty: 3 years for the meter; 6 months for the electrode
Key Advantage: The PH8500-MS measures extremely small samples while providing GLP records and USB export, making it valuable when sample volume is limited and measurement records must be documented reliably.