Your source for pH, TDS, PPM controllers.
Testing and Controlling - pH, TDS, PPM
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Hanna Instruments Grochek TDS Meter
Model HI 983301N: Continuous reading TDS meter with a remote laboratory grade probe helps keep your indoor gardens healthy.
Comes with 2 meters and 6 feet of cable, which hangs conveniently on the wall.
UL-listed 12VDC transformer.
Watertight enclosure - built-in alarm light blinks when value deviates from desired range!
Read Instruction Manual (PDF format - Lots of detail.)
Hanna Instruments Grochek TDS Meter [HI 983301N]
$89.95
Replacement TDS Probe [HI 7634]
$32.95
1500 ppm (TDS) calibration solution - 230 ml
$9.95
Call or email us for quantity discounts!
FREE SHIPPING on orders totaling $250 or more when delivered within lower continental USA!!!
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Growco Indoor Garden Supply 1042 Michigan NE · Grand Rapids, Michigan USA 49503-1908 phone: (616) 454-6900 · toll free: 877-939-6900 email