Ehren store offers a 36-month warranty on this reliable TDS pen and provide you a 90-day money-back guarantee and a full range of friendly consulting services. Please feel free to purchase it. Easy to Use You can know the purity of the water just by gently stirring the pen in the water. Product Upgrade In 2018, the latest upgrades have added a large, dual-color, backlit LCD screen that is easier to watch and a 5-years long-life lithium metal battery. Higher Accuracy The equipment used for calibration of Tds pens is Hach, a leading brand from the water quality industry. Technical parameter Measuring range: 0-9990ppm Conductivity: 0 - 9990 μs/cm? Operating Temp：32~122℉ Definition: ±2% Battery: 3V Net weight: 1.4 ounce Size: 6.4*1.2*0.6 inch In the Box TDS 3in1 water quality test pen, exclusive leather case, detailed instruction manual, Ehren Store's after-sales service card. Ehren Store is committed to providing high-quality and reliable products. We spare no efforts to make you have worriless shopping experience!
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