The Apera PH400 (AI411) is a professional handheld pH meter designed for routine nutrient-solution testing and water-quality checks in commercial cultivation facilities. Its 201T-S combination electrode measures pH and temperature simultaneously, while automatic temperature compensation and three-point calibration support accurate, repeatable readings. The IP57-rated meter is suitable for wet cultivation environments and comes with calibration buffers and a rugged carrying case.
• Brand: Apera Instruments
• Model / SKU: PH400 / AI411
• pH Measurement Range: 0–14.00 pH
• pH Accuracy: ±0.01 pH
• Resolution: 0.01 pH
• Included Electrode: 201T-S combination pH/temperature electrode
• Temperature Compensation: Automatic or manual, 0–100°C
• Calibration: Automatic 3-point calibration at pH 4.00, 7.00, and 10.00
• Protection Rating: IP57 waterproof and dustproof
• Applications: Nutrient solutions, irrigation water, and reservoir monitoring
• Included Accessories: Meter, electrode, three calibration buffers, and carrying case
• Warranty: 2 years for the meter; 6 months for the probe
Key Advantage: The PH400 combines ±0.01 pH accuracy, replaceable electrodes, and a rugged waterproof design in a portable kit for daily nutrient-solution checks. It also supports ORP measurements with a separately purchased compatible electrode.