The Apera EC850 (AI5512) is a professional handheld meter designed to measure electrical conductivity (EC), total dissolved solids (TDS), and temperature. Its BPB (Brush-resistant Platinum Black) 2301T-S electrode provides ±1% full-scale accuracy across a wide 0–200 mS/cm range, making it suitable for testing RO water, nutrient solutions, and irrigation runoff. Its IP57 protection, adjustable TDS conversion, and fold-out stand support both field testing and benchtop use.
• Brand: Apera Instruments
• Model / SKU: EC850 / AI5512
• Measurement Parameters: EC, TDS, and temperature
• EC Range / Accuracy: 0–200 mS/cm / ±1% F.S. ±1 digit
• Included Electrode: 2301T-S BPB conductivity/temperature electrode
• Calibration: Automatic 1–3-point calibration; recognizes 84 µS/cm, 1,413 µS/cm, 12.88 mS/cm, and 111.8 mS/cm
• TDS Conversion Factor: Adjustable from 0.40 to 1.00
• Temperature Compensation: Automatic (ATC)
• Protection Rating: IP57 waterproof and dustproof
• Display: Backlit LCD with simultaneous EC/TDS and temperature readings
• Additional Features: Fold-out stand, silicone grip cover, and electrode self-diagnosis
• Included Accessories: 2301T-S electrode, 1,413 µS/cm and 12.88 mS/cm calibration solutions (50 mL each), carrying case, and battery-replacement screwdriver
• Warranty: 3 years for the meter; 6 months for the electrode
Key Advantage: The EC850 combines a wide conductivity range, adjustable TDS conversion, and rugged IP57 protection in one portable instrument. Its fold-out stand also allows convenient benchtop testing at nutrient-mixing stations.