máy đo độ dẫn điện của nước YK-22CT
* 2 in 1, professional Conductivity and TDS ( Total Dissolved Solids ) Meters
* Conductivity meter is included two ranges : 2 mS, 20 mS. TDS meter is with 2 ranges : 2,000 PPM, 20,000 PPM. Temperature measurement range is 0 - 60 / 32 - 140 ℃ ℉