Milwaukee EC meter EC40 waterproof

Milwaukee Conductivity Pen - Precise Electrical Conductivity Measurement Product Description: The Milwaukee Conductivity Pen is designed for hydroponic and other growers to help you ensure your plants are receiving the correct amount of nutrients. Maintain EC within your target range for better results. Design Features: Measures conductivity and temperature with automatic temperature compensation Ideal range for hydroponics (0 to 20,000 µS/cm) Units in µS/cm are easily convertible to ppm Factory calibrated with the ability to recalibrate if needed 350 hours of continuous operation (3 x 1.5V batteries included) Maintenance: EC electrodes can build up nutrients over time. To minimize buildup, always rinse the probe with fresh tap water after each use. EC to TDS Conversion: The Milwaukee EC Pen, like all conductivity meters, provides a measure of electrically charged ions in a solution and is an absolute measure of conductivity. EC is often converted to TDS in parts per million (ppm). Various scales include the 500 scale, 650 scale, and the 700 scale. However, true ppm can only be determined by chemical analysis. Your mS/cm reading can be approximately converted to TDS (ppm) as shown in the examples below. 2,000 µS/cm = 2.0 mS/cm = 1,000 ppm on a 0.50 factor scale. 2,000 µS/cm = 2.0 mS/cm = 1,400 ppm on the 442 scale or 0.70 factor scale. Thank you for considering Milwaukee to take your results to the next level. Specifications: Range: 0 to 20,000 µS/cm Resolution: 100 µS/cm Accuracy: ±2% of full scale Temperature compensation: Automatic from 5 to 50°C, with ß=2%/°C Calibration: Manual, at 1 point using a trimmer Environment: 0 to 50°C / 32 to 122°F Max. humidity 100% Battery type: 4 x 1.5V alkaline (included) Battery life: Approx. 350 hours of continuous use Dimensions: 6 x 1.2 x 0.95 inches Weight: Approx. 85 grams