3-in-1 Waterproof EC PPM CF Stick TDS Meter Nutrient Tester ***           This 3 in 1 nutrient meter dipstick is the fastest & easiest way to measure the nutrient strength in your nutrient reservoir. It provides highly accurate results for EC (Electricity Conductivity), CF (Conductivity Factor) and Total Dissolved Solids (TDS) (PPM or parts per million). Reading is instantly displayed on an intuitive waterproof flashing analog LED lights scale. Knowing the strength of nutrients is essential when growing hydroponics to determine what the strength of the solution is before feeding your plants and while they are growing. This perfect all-around conductivity meter is 100% waterproof, simple to use & easy to read, is fully temperature compensated, and automatically turns on and off when placed in or removed from the test solution and has a wider measuring range of 52CF, 5.2EC and 3640ppm. Special Features Measure EC (Electricity Conductivity), CF (Conductivity Factor) and PPM (parts per million) in one stick High conductivity measurement for broad range of crops 100% Fully Waterproof Easy to use, no external knobs or switches Automatic Power On / Off Built-in with Automatic Temperature Compensation (ATC) Factory calibrated, never needs recalibration Specifications Measuring range: CF: 4~52CF EC: 0.4~5.2EC TDS: 280~3640ppm (EC x 700) TDS: 200~2600ppm (EC x 500) Resolution: CF: 1CF EC: 0.1EC TDS: 70ppm (700 conversion factor) TDS: 50ppm (500 conversion factor) Accuracy: ±4% of reading Automatic Temperature Compensation: 0~50°C (32~122°F) Operating Temperature: 0~50°C (32~122°F) Factory Pre-Calibrated Automatic Power On / Off Power Supply: 3 x 1.5V AA Batteries (Included) Size: approx. 415 x 23 x 23mm Weight: approx. 179g Standard Set Includes 1 x Waterproof 3-in-1 CF / EC / PPM Stick 3 x 1.5V AA Batteries Quick Start Guide Standard Factory Package     Copyright © 2008. All rights reserved. Discount Instrument *