Apera Instruments AI102G GroStar Series GS2 Soil pH Pen Tester Kit for Direct Soil Test
- Replaceable spear pH probe
- Direct soil and nutrient solution testing
- 2 year instrument, **1 year** probe warranty
- 133 g
- Lead-free glass and PVC build
Updated 2 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A grower-focused pH pen with a spear probe that reads soil directly and also tests nutrient solutions. The listing gives no accuracy or range figures, so check the manual before relying on it.
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ASIN: B0BGQFTMMYModel: AI102GCategory: pH Meters
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Overview
A replaceable spear-shaped pH sensor on this pen reads soil directly and measures nutrient solutions too. Apera describes it as a lab-grade meter designed for growers, with a workflow built around crop success.
The reason to buy is the replaceable spear probe, which can be swapped when it wears, and the soil-ready design. The limitation is the absence of accuracy, range and calibration details in the listing.
Who it's for
Home growers and small farms checking soil pH or hydroponic mixes will benefit from the direct soil probe. Casual gardeners wanting a simple strip test, or anyone needing stated accuracy, should look at other tools.
Pros and cons
- Replaceable spear pH probe
- Reads soil directly
- Also tests nutrient solutions
- Separate warranty for probe
- Accuracy and range not listed
- Probe needs replacing over time
- Batteries and calibration not described
Performance notes
A glass pH sensor measures the voltage difference between its tip and the sample, which the meter converts into a reading. A spear shape pushes into moist soil, and the sensor needs contact with moisture to work. Probes wear with use, which is why the replaceable design matters.
Specifications
| Brand | Apera Instruments |
|---|---|
| Model | AI102G |
| Material Type | Lead-free glass, PVC |
| Warranty Description | 2-year for the instrument, 1-year for the probe |
| Included Components | GroStar GS2 Soil pH Pen Tester Kit (Gen II) |
| Dimensions | 8.66 x 1.5 x 1.3 inches |
| Weight | 133 g |
Closest rivals on specs
VIVOSUN Digital pH Meter 0.01 Accuracy Pen Tester for Water Hydroponics- Item Weight 0.29 vs 0.24 pounds (+21%)
Hanna Instruments HI98128 pHep 5pH/Temperature Tester- Item Weight 0.29 vs 0.22 pounds (+32%)
Frequently asked questions
How big is the Apera AI102G pH pen?
The listing gives 8.66 x 1.5 x 1.3 inches and 133 g, a pen-sized meter.
Can the Apera AI102G test liquids as well as soil?
Yes. The title says direct soil test and nutrient solutions test.
Is the Apera AI102G probe replaceable?
Yes. The listing says a replaceable Swiss spear pH probe.