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APERA INSTRUMENTS AI316 Premium Series PC60 5-In-1 Waterproof Ph/EC (Conductivity) /TDS (Ppm) /Salinity (Ppt) /Temp. Multi-Parameter Pocket Tester Kit
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$110.95
$130.56
APERA INSTRUMENTS AI316 Premium Series PC60 5-In-1 Waterproof Ph/EC (Conductivity) /TDS (Ppm) /Salinity (Ppt) /Temp. Multi-Parameter Pocket Tester Kit
Amazon.com
$13.00
Safe Home Basic 120 Water Test Kit Multi-Use Water Test Kit | SH-GH-BASDIY120
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Safe Home Basic 120 Water Test Kit Multi-Use Water Test Kit | SH-GH-BASDIY120
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$17.47
Ispring 3-Button Digital Water Quality And Hardness Test Meter Multi-Use Water Test Kit | TDS3
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Ispring 3-Button Digital Water Quality And Hardness Test Meter Multi-Use Water Test Kit | TDS3
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Ispring 2-Button Digital TDS Meter With Backlit LCD Multi-Use Water Test Kit | TDS2
Lowe's
$17.46
Ispring 2-Button Digital TDS Meter With Backlit LCD Multi-Use Water Test Kit | TDS2
Lowe's