This new GroChek pH / temperature indicator from Hanna has a large, dual-level back-lit LCD for instant reading of both pH and temperature, even from a distance. The microprocessor provides automatic buffer recognition and automatic temperature compensation.

The HI 991401 has been designed to meet growers needs for equipment suited to the aggressive environments found in agricultural and hydroponics applications. Measurements are highly accurate and can be verified with one or two point calibration. Low batteries and battery changes are no longer a problem thanks to a 12 VDC power supply included with the meter. The electrode is interchangeable and has been specially designed to address the needs of growers. Its improved design guarantees greater clogging resistance in fertilizer solutions with high concentrations of phosphate and nitrate, to ensure longer life for your electrode!

HI 991401 is supplied complete with HI 1293D pH electrode, HI 1294 temperature probe (fixed), pH 4 and 7 buffers (20 mL each), 12 VDC adapter and instructions.

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See the last section of the pH Meters page for information about calibration solutions.
Click to download a PDF of the instruction sheet for this meter

Caprock Developments Inc./PO Box 95/Morris Plains, NJ 07950 USA 
Since 1953.  Delivery available to all points worldwide.
Tel. (800)-222-0325 / (973)-267-9292 from 9:00AM to 5:00PM Eastern Time / Fax (973)-292-0614