The Apera DO850 (AI480) is a portable dissolved oxygen (DO) meter designed for commercial cultivation, hydroponics, and water-quality monitoring. Its optical luminescence sensor measures oxygen without consuming it during testing, so readings remain reliable even in still reservoirs. Unlike traditional electrochemical probes, it requires no electrolyte solution or membrane replacement. The kit includes a 10 ft optical probe, calibration/storage cap, and rugged carrying case.
• Brand: Apera Instruments
• Model / SKU: DO850 / AI480
• Measurement Range: 0–20.00 mg/L (ppm); 0–200% saturation
• Accuracy: ±2% of reading or ±0.2 mg/L, whichever is greater
• Response Time: ≤30 seconds to reach 90% of the final reading at 25°C
• Sensor Type: DO803 optical luminescence probe with built-in temperature sensor
• Probe Cable: 10 ft (3 m)
• Compensation: Automatic temperature (0–50°C) and barometric pressure (60–120 kPa); manual salinity compensation (0–45 ppt)
• Calibration: Two-point calibration—oxygen saturation and zero oxygen; no calibration required before every use
• Protection Rating: IP67 waterproof and dustproof
• Sensor Cap Life: Rated for 8,000+ hours; replaceable DO8032 cap
• Power Supply: 3 AA batteries
• Included Accessories: DO850 meter, DO803 optical probe, calibration/storage cap, and carrying case
• Warranty: 3 years for meter, 2 years for probe body, and 1 year for sensor cap
Key Advantage: The DO850 provides fast dissolved oxygen readings with minimal maintenance. Its optical probe works without water flow, electrolyte refills, or membrane changes, making it practical for checking oxygen levels in DWC/RDWC reservoirs, nutrient tanks, and recirculating hydroponic systems.