AMTAST Digital Direct Soil EC Meter Electrical Conductivity Temperature Tester I
$85
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3~in~1 Digital EC CF TDS Meter Combo Water Quality Tester IP65 Waterproof Conduc
$32
Digital pH and Conductivity EC Meter Water Quality Tester with Temperature Measu
$35
Bluelab PENCON Conductivity Pen and Digital TDS Meter Water Tester for Temperat
$72
General Tools DCM7021 Digital Conductivity Meter
$85
4 in1 Multifunctional Portable PH EC TDS Temperature Digital Water Quality Teste
$25
4 in1 Water Quality Tester Pen Type Multifunctional PH EC TDS Temp Water Meter P
$25
Oumefar EC‑316 Salinity Tester High Precision Soil EC Tester Humanized Design Di
$64
Water Quality Tester Digital Electrical Conductivity EC Meter Water Quality Test
$50
XJJZS Portable Digital 3 in 1 TDS EC Temp Meter Aquarium Water Quality Purity Co
$69
Digital Water Quality Meter 3 in 1 COND TDS Temp Meter，0~1999ppm 0~19.99ppt Pe
$60
iPower Digital Thermometer Hygrometer with pH TDS Water Test Meter C
$24