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GroStar® Pens

GroStar Series GS4-P pH/EC/500ppm/700ppm/ORP 6-in-1 Combo Pen Tester Kit (Gen II) with Replaceable Double-junction pH/EC Probe and ORP Probe for Hydroponics Water Quality Testing

Regular Price:$239.00
$239.00
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GroStar® GS1 pH Pen Tester (Gen II)

Regular Price:$116.00
$116.00
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GroStar® GS2 Soil pH Pen Tester (Gen II)

Regular Price:$230.00
$230.00
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GroStar® GS3 EC/ppm Pen Tester (Gen II)

Regular Price:$114.00
$114.00
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GroStar® GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen Tester (Gen II)

Regular Price:$179.00
$179.00
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