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![Hanna Instruments Combo pH, EC/TDC/Temp [HI 991404] - ON SALE!](images/comboGrochek.jpg)
Model HI 991404: A large backlit LCD continuously monitors the three most important nutrient parameters in greenhouse, hydroponics and horticultural applications.
This Hanna Instruments Combo GroChek is waterproof, has adjustable TDS ratio and ß and an external 12 VDC power supply.
It has an advanced, non-cloggin, double-junction pH electrode and a rugged conductivity probe that will stand up to the most aggressive environments.
The Combo GroChek also provides a stability indicator for peace of mind.
More info (PDF format)
Hanna Instruments Combo pH, EC/TDC/Temp [HI 991404] - ON SALE!: |
$234.95
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Combo Pack: pH 4.0 AND pH 7.0 Calibration Solutions - 8 oz. each: |
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