GroStar GS4 (5-in-1) Combo Pen - pH/EC/TDS/Temp

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Sale price$139.99 Regular price$178.99


Designed for Growers

GroStar GS4 pH/EC Combo Pen Tester is a lab grade instrument designed specifically for growers in the horticultural market. The Premium combo pH/EC probe measures pH, EC, ppm (500/700) all-in-one unit with minimal maintenance. GroStar's intelligent design reduces the guesswork so you can easily manage your crops success.

The easy-to-use design, durable structure with IP67 waterproof rating, and quick two-point calibration adjustment ensures high accuracy and dependable performance with minimal maintenance. The 3-Color backlit LCD screen gives you clear readings in different modes even in dark environments. The probe is also replaceable, so you don't have to discard the entire pen when the probe reaches its end of life.

INCLUDES: pH 7 & pH 4 solution (50ml bottles of each), 2.77 EC calibration solution (50ml bottle), KCL soaking solution (10ml bottle), cleaning brush, hole dibber, lanyard and user manual.


 RANGE: 0.0 to 14.0 pH,
0 to 10.0 EC,
0 to 7000ppm (700ppm),
0 to 5000ppm (500ppm),
0 to 50˚C (32 to 122˚F.
RESOLUTION: 0.1 pH, 0.1 EC, 10ppm (700ppm), 10ppm(500ppm), 0.1˚F/0.1˚C.
ACCURACY: ±0.1 pH,
±0.1 EC,
±30ppm (500ppm),
±40ppm (700ppm),
CALIBRATION: pH: automatic 1 to 3 points (7/4/10),
*10.01 pH solution sold separately,
EC: automatic 1 point (2.77 EC).
WARRANTY: Two years for the instrument, one year for the probe.

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