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Propagation Stations
Propagation Kits
Seed Starter Trays
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Coco Coir Bricks
Seed Storage Boxes
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Raised Garden Beds
Mulch Mats
Worm Composters
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Moss Poles
Plant Support Rings
Plant Ties
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Plant Stakes
Garden Stakes
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AperaInstruments
Apera Instruments GroStar Series GS1-P pH/ORP Pen Tester Kit with Replaceable Double-Junction pH Probe and ORP Probe for Hydroponics Water Quality Testing, Gen II
Apera Instruments GroStar Series GS1-P pH/ORP Pen Tester Kit with Replaceable Double-Junction pH Probe and ORP Probe for Hydroponics Water Quality Testing, Gen II
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About This
Lab-grade instrument designed specifically to meet growers' needs and habits
Measures pH, ORP (redox), and temperature with premium probe technologies, ensuring high accuracy and durability with minimal maintenance
Grower-friendly calibration workflow on an HD backlit screen allows you to finish 2-point calibration within a minute
Replaceable double-junction pH and ORP probe
Electrode condition indicator and calibration reminder function help you perform proper maintenance in a breeze
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