Oakton TDS 6+ Handheld Total Dissolved Solids Meter Kit, -10 To 110°C Temperature Range And 0 To 10.00, 10 To 100.0, 100 To 1000 Ppm 1.00 To 10.00, 10.0 To 100.0, Up To 200.0 Ppt TDS Range, With NIST Traceable Certificate Of Calibration - WD-35604-25
Bluelab PENCON Conductivity Pen And Digital TDS Meter, Water Tester For Temperature And Nutrient (CF, EC, PPM 500, PPM 700), TDS Testing Kit For Hydroponic System And Indoor Plant Grow Pack Of 2
Oakton TDS 6+ Handheld Total Dissolved Solids Meter Kit, -10 To 110°C Temperature Range And 0 To 10.00, 10 To 100.0, 100 To 1000 Ppm 1.00 To 10.00, 10.0 To 100.0, Up To 200.0 Ppt TDS Range, With NIST Traceable Certificate Of Calibration - WD-35604-25
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