YUV Digital LCD Pre-Calibrated TDS Meter Tester Portable Pen 0.01 High Accurate Filter Measuring Water Quality Purity Test Analyzer Tool for Aquarium Pool Hydroponics & Drinking RO Water Digital TDS Meter

two beg lader free Free 02 Pcs LR44 battery extra for this device Free 02 Pcs LR44 battery extra for this device YUV Digital LCD Pre-Calibrated TDS Meter Tester Portable Pen 0.01 High Accurate Filter Measuring Water Quality Purity Test Analyzer Tool for Aquarium Pool Hydroponics & Drinking RO Water Digital TDS Meter. YUV'S New Water Purity Tester Digital TDS Meter Ideal For Commercial Use. Includes A Carrying Case With Belt Clip. Highly Efficient And Accurate Due To Its Advanced Microprocessor Technology. Hold Function: Saves Measurements For Convenient Reading And Recording. Auto-Off Function: Measurement Range: 0-4990 Ppm. From 0-999 Ppm, The Resolution Is In Increments Of 1ppm. From 1000 To 4990 Ppm, The Resolution Is In Increments Of 10ppm, Indicated By A Blinking 'X10' Image. Built-In Digital Thermometer Display: Large And Easy-To-Read Lcd Screen. Factory Calibrated: Our Meters Are Calibrated With A 342 Ppm Nacl Solution. Meters Can Be Recalibrated With A Mini-Screwdriver. Also Available In "X10" Mode: Reads In Increments Only Of 10 Ppm (0-4990 Ppm). Click Here For A Photo Of The Meter With Its Case. Need Help Deciding Which Meter Is Right For You**