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Apera GS2 | GroStar Soil pH Pen Tester | pH 0.0 to 14.0, ±0.1 pH, Spear probe
The GS2 is a GroStar soil pH pen tester with a spear probe for direct soil pH measurement. It measures 0.0 to 14.0 pH with 0.1 pH resolution and automatic 1 to 3 point calibration.
Key features
- pH range 0.0 to 14.0, resolution 0.1 pH, accuracy ±0.1 pH
- Soil spear probe with low-impedance lithium glass membrane, double junction, blue gel electrolyte
- Automatic 1 to 3 point calibration (7/4/10; pH 10 solution sold separately)
- TruRead measurement mode for easy soil data logging from multiple locations
- IP67 waterproof; 4 x AAA alkaline batteries
- Specifications
- Downloads
| Part Number | GS2 |
| Brand | Apera Instruments |
| Range | 0.0 to 14.0 pH; 0 to 50 °C (32 to 122 °F) |
| Resolution | 0.1 pH; 0.1 °F/0.1 °C |
| Accuracy | ±0.1 pH; ±1 °C/±1 °F |
| Calibration | Automatic 1 to 3 points (7/4/10) (pH 10 solution sold separately) |
| Unit | pH, °F, °C |
| pH Probe | Soil spear probe, low-impedance lithium glass membrane, double-junction, blue gel electrolyte |
| Temperature Compensation | Automatic 32 to 122 °F (0 to 50 °C) |
| Power Supply | 4 x AAA alkaline batteries |
| Backlight | White (measurement); Green (calibration); Red (error) |
| Reading Hold | Manual |
| Waterproof Rating | IP67 |
| Dimension / Weight | Tester: 40x31x178 mm / 107 g; Case: 190x165x40 mm / 438 g |
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