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    • Top Sellers

    Extech EC400 ExStik Waterproof Conductivity, TDS, Salinity, and Temperature Meter $104.99 B00023RXFK
    Extech PH100 ExStik pH Waterproof Meter ★★★★☆ 107 $130.00 B00023RYQ8
    HM Digital TDS-4 Pocket Size TDS Tester Meter with 0-9990 ppm Measurement Range , 1 ppm Resolution, +/- 2% Readout Accuracy $35.00 B0002T6L5M
    Milwaukee Instruments MW102 PH and Temperature Meter $258.99 B001DTNDME
    B002C5DEW2 B002C5DEW2
    Hanna Combo pH/EC/TDS/C/PPM Tester HI98129 $154.00 B002ZG8L58
    HM Digital AP-1 AquaPro Water Quality Total Dissolved Solids Tester, 0-5000 ppm TDS Range, 1 ppm Resolution, +/- 2% Readout Accuracy (Magnetic Body) $22.93 B007KDYOMU
    B00FJFEB2O B00FJFEB2O
    Bluelab Probe Care Kit - pH and Conductivity B00GG9C16U
    Crenova MS8233D Auto-Ranging Digital Multimeter Home Measuring Tools with Backlight LCD Display $19.99 B00KXX2OYY
    DLAND Digital PH Meter + TDS Tester Aquarium Pool Hydroponic Water Monitor 0-9999 PPM $17.63 B00ZUBIHJK

    Most Gifted

    HM Digital TDS-4 Pocket Size TDS Tester Meter with 0-9990 ppm Measurement Range , 1 ppm Resolution, +/- 2% Readout Accuracy $35.00 B0002T6L5M
    Milwaukee Instruments MW102 PH and Temperature Meter $258.99 B001DTNDME
    Hanna Instruments HI 991003N pH/pH-mV/ORP/Temperature meter, with Extended Range $399.00 B002NX0VZG
    Extech EC600 Waterproof Conductivity Kit $469.99 B004WN6F2I
    Milwaukee pH56 LED Waterproof Dual Level Pocket pH/Temp Tester with Replaceable Electrode, -2.00 to 16.00 pH, +/-0.05 pH Accuracy, 0.01 pH Resolution $72.00 B007Z4HZ8O
    Hanna Instruments HI98128 pHep 5pH/Temperature Tester, 6-25/64" Length x 1-19/32" Width x 1" Height $97.00 B0085WV6GM
    B00FJFEB2O B00FJFEB2O
    Bluelab Probe Care Kit - pH and Conductivity B00GG9C16U
    Ariic New Portable Pen Digital PH TDS Meter Tester Filter Measuring Water meter $14.99 B00KLWZC7S
    Crenova MS8233D Auto-Ranging Digital Multimeter Home Measuring Tools with Backlight LCD Display $19.99 B00KXX2OYY