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HM Digital Dm-2 TDS Inline-dual Commercial Measuring Device for Testing Hydropon

Best Selling in pH, Conductivity & TDS Meters

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eSeasongear SALT-3000 Digital Salinity PPM Meter
4.7 out of 5 stars based on 42 product ratings
$31.34 New
---- Used
Apera Instruments AI31 PH60 Premium Waterproof pH Pocket Tester
4.8 out of 5 stars based on 16 product ratings
$70.99 New
$55.00 Used
Apera Instruments AI314 Pocket Tester Ec60 Premium Waterproof Conductivity
No ratings or reviews yet
$107.00 New
$79.99 Used
Apera Instruments AI3711 Ph60-z Bluetooth Smart Ph Tester Powered by Zentest App
No ratings or reviews yet
$122.95 New
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Milwaukee Instruments EC60 Waterproof Ec-tds Tester
No ratings or reviews yet
$60.99 New
---- Used
Milwaukee MW801 3-in-1 TDS Meter - Black
5.0 out of 5 stars based on 3 product ratings
$204.95 New
$60.00 Used
Extech ExStik PH100 Waterproof pH Meter
4.0 out of 5 stars based on 1 product rating
$114.96 New
$45.00 Used