Completely waterproof. The battery compartment is sealed against accidental splashing or brief submersion under one meter of water. Measures EC (electrical conductivity), CF (conductivity factor), and PPM (parts per million) scales. High conductivity measurement range suitable for a broad variety of crops. Factory calibrated for reliable accuracy. Auto on/off function activates the meter when placed into or removed from solution. If you use hydroponics to grow fruits and vegetables, you understand the importance of maintaining the correct nutrient balance. This nutrient meter is quick, easy to use, and delivers accurate readings consistently. All measurements are displayed directly on the device—no need to consult additional manuals. Simply dip into your solution and read the results. Proper nutrient levels contribute to healthy plant growth and high-quality produce. Reads: EC (electrical conductivity) CF (conductivity factor) PPM (parts per million) Key Benefits: Easy-to-read LED indicator scale provides clear nutrient level information Accurate results with factory calibration (can be recalibrated using EC 1.4 buffer solution to maintain precision) Automatically temperature compensated for reliable use in varying environments Fully waterproof design protects against water damage Extended battery life with auto on/off functionality Simple two-step process for taking measurements How to Use: 1. Insert the probe into the solution for 1–2 minutes to equalize temperature, then remove. 2. Reinsert the probe into the solution. The LED lights will display the nutrient concentration. 3. Rinse the probe and replace the cover. Features: - Fully waterproof construction - Sealed battery compartment protects against splashing or brief submersion - Measures EC, CF, and PPM - Designed for high conductivity readings across diverse crops - Factory calibrated - Automatic power function - No external knobs or switches - Includes step-by-step instructions - New and boxed Specifications: Range: - EC: 0.4–5.2 - CF: 4–52 - PPM (EC × 700): 280–3640 - PPM (EC × 500): 200–3000 Resolution: - EC: 0.1 - CF: 1 - PPM (×700): 70 - PPM (×500): 50 Accuracy: ±4% Operating Temperature: 0–50°C (32–122°F) Automatic Temperature Compensation: 0–50°C Battery: 3 × AA (not included) Dimensions: 415 × 25 × 25 mm (16.3 × 1 × 1 in) Weight: 103 g (3.6 oz) Package Includes: 1 × Nutrient Meter 1 × User Manual 1 × Plastic Storage Box Note: Due to manual measurement, there may be a slight variation of 1–2 cm/inch in dimensions.