TDS Tester

Product description: TDS meter is English "Total Dissolved Solid" acronym, meaning that the total dissolved solids, total dissolved solids is dissolved in water and organic salts in general. Its main ingredients are calcium, magnesium, sodium, potassium ions and carbonate ions, hydrogen ions, chloride ions, sulfate ions and nitrate ions. Therefore, the total dissolved solids TDS meter is the tester. TDS meter unit is ppm (ie mg / L), which is defined as a ratio of the number value of the conductivity, and generally about 0.7. TDS meter automatic temperature compensated reference temperature is generally 25 ℃, the temperature coefficient is generally 2% / ℃.   139 Series pen-tester measured value, reliable, simple and fast, accurate measurement of total dissolved solids, simplifying the previous testing methods. This section pen TDS meter for handheld measurement, LCD display measurement readings.  
Technical Specification:

Model	TDS-139C
Measuring range	10~1990ppm
Accuracy	±2℅F·S
Resolution	10ppm
Automatic Temperature   Compensation	0℃~50℃
Power Supply	4×1.5V(AG13)
Dimensions	150mm×29mm×15mm
Weight	51g