The Apera EC20 (AI212) is a waterproof handheld conductivity tester designed for routine EC monitoring in hydroponics, coco, soil-drench systems, and water treatment. Its Brush-Resistant Platinum Black (BPB) electrode provides ±1% full-scale accuracy across a 0–20 mS/cm range. Automatic temperature compensation and stable-reading indicators support consistent nutrient-solution testing.
• Brand: Apera Instruments
• Model / SKU: EC20 / AI212
• Measurement Parameters: EC and temperature
• EC Range: 0–20 mS/cm (three automatic ranges)
• EC Accuracy: ±1% full scale
• Probe: Brush-Resistant Platinum Black (BPB) electrode
• Temperature Compensation: Automatic, 0–50°C; ±0.5°C accuracy
• Calibration: Automatic 1–2-point calibration with buffer recognition
• Protection Rating: IP67 — waterproof, dustproof, and floatable
• Power Supply: 4 × AAA batteries; approximately 1,000 hours of operation
• Dimensions / Weight: 178 × 40 × 31 mm / 107 g
• Included Accessories: 1,413 µS/cm and 12.88 mS/cm calibration solutions, batteries, lanyard, and hard carrying case
• Warranty: 2 years for meter; 6 months for probe
• Important Limitation: Measures EC only; no built-in TDS (ppm) or salinity mode.
Key Advantage: The EC20 offers a wide 0–20 mS/cm measurement range in a compact, floating IP67-rated tester. Its BPB electrode and automatic calibration make it practical for daily source-water, nutrient-feed, and runoff EC checks.