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Apera GroStar GS1 pH Pen Tester Gen II | Replaceable Probe, TruRead, 3-Color LCD
Apera GroStar® GS1 pH Pen Tester (Gen II) — Professional pH for Growers
The Apera GroStar GS1 Gen II is a premium pH pen tester engineered specifically for growers who demand professional-grade accuracy without the complexity. Its intelligent, grower-friendly design eliminates guesswork so you can focus on what matters — healthy crops and optimal yields.
Key Features
Replaceable Double-Junction pH Probe — Built with a double-junction reference system and blue gel inner solution for fast, accurate readings and extended service life; swap the probe, not the pen
TruRead™ Measurement Mode — Take readings across multiple locations and automatically display the average, minimum, and maximum values — ideal for monitoring pH variation across a grow
2-Point Automatic Calibration — Simple workflow with electrode condition display so you always know probe health at a glance
3-Color Backlit LCD — Clear readings in any lighting condition; color-coded by mode for instant status recognition
Grower-Optimized Design — Streamlined for field and grow-room use; built to handle the demands of daily horticultural pH monitoring
Applications
Hydroponics, aquaponics, soil pH testing, nutrient solution monitoring, cannabis cultivation, greenhouse growing, and general water quality testing.
What's in the Box
GS1 pH Pen Tester (Gen II)
pH Calibration Solutions
Replacement Probe (check kit contents)
User Manual
Why GroStar GS1?
Most pH pens force you to replace the entire unit when the probe ages. The GS1's replaceable probe design protects your investment — replace only the probe when needed, not the full meter. Combined with TruRead™ multi-point averaging, it's the most grower-intelligent pH pen in its class.
