["brand new and high quality\nFeatures:\nEZ-9909 is a new multi-functional water quality test instrument, which can measure pH, TDS,EC, salinity value and temperature. The measurement range is large and wide, which can measure both for fresh water salinity and sea salt\nLow power consumption，Automatic shutdown,The instrument will shut down automatically for 5 minutes without any operation \nAutomatic temperature compensation function\nWith backlight function, it can be tested at night\nSmall size, light weight, easy to carry, can be put into a pocket\nThe waterproof grade is IP67, at normal temperature and pressure, when the for shell is temporarily immersed in 1M water will not cause harmful effects\nConductivity test range: 0 to10000uS/for cm 10.01-19.99ms 20.1-400mS/for CM\nResolution: 1uS/for cm; 0.1mS/for CM\nAccuracy: ±2% of reading\nTds test range: 0 to 1000ppm 1000ppm to 10000ppm 10.1 to 200.0ppt\n Resolution: 1ppm;; 0.1ppt\n Accuracy: ±2% of reading\nSalinity measurement range: 0.00 to 25.00%\nResolution: 0.01%\nAccuracy: 0.01-5.00% (±0.1%) 5.10-25.00% (±1%)\npH test range: 0.01-14.00pH\nResolution: 0.01pH Accuracy: ±0.05pH\nTemperature compensation: automatic temperature compensation (ATC)\nWorking environment: 0 to 60.0°C (32.0-140°F); RH \nTDS factor: 0.4to 1.0\nTemperature range: 0.1-60.0℃ 32.0-140℉\nTemperature accuracy: ±0.5℃\nTemperature resolution: 0.1℃/℉\n\nDisplay: Support backlight\nWaterproof rating: IP67\nPower consumption: 2.9 mA, shutdown power consumption is 0\nThe accuracy is more accurate within 150ppt, and the deviation above 160ppt is relatively large.\nNote: Every for time you use it up, you must clean the electrode\n\nAbout instrument calibration\nConductivity EC: support 3-point calibration automatic identification (1413us 12.88ms and 111.8ms) with 3 built-in calibration points (1413us /for cm 12.88ms /for cm 111.8ms /for cm)\nPH: calibration solution can be automatically identified at 1 point (6.86) or 2 points (6.86 4.00) (6.86 9.18) or 3 points (6.86 4.00 9.18)\nPH measurement range\nDescribe the details of the selling point above, attracting and providing trust to your potential users.\n\nNote:\nPlease allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\n\nPackage includes:\n1set Tester(as the picture shows)"]