±0.01 pH accuracy in solid substrates, coco, and solutions — no slurry required.
Apera PH60S (AI313) is a Premium Series pocket pH tester built around a Swiss LabSen spear electrode that reads directly into solid and semi-solid grow media — coco coir, rockwool, living soil — as well as nutrient solution, without the need to prep a slurry. The complete kit ships ready to calibrate and use, with buffers, storage solution, and carrying case included.
The Apera PH60S is a pocket-sized pH meter from Apera's 60 Series Premium line, purpose-built for direct insertion into solid and semi-solid samples. The defining feature is the Swiss LabSen 753 spear electrode — a spear-glass membrane with a double-junction structure, polymer electrolyte long-life reference system, and a built-in temperature sensor. That construction makes it impact-resistant, slow to contaminate, and capable of producing fast, stable readings when pushed directly into dense substrates that would defeat a standard bulb probe.
The meter body is IP67 waterproof and dustproof — rated for the wet, high-humidity environment of a commercial grow. A 3-color backlit LCD shows dual pH and temperature readings simultaneously, with display color indicating operating mode: blue for measurement, green for calibration, and red for alarm.
Commercial cannabis and hemp cultivation teams that run coco coir, amended living soil, or any dense semi-solid substrate need a way to confirm actual substrate pH — not just solution pH. Feeding your plants at 5.8 in solution while your coco block has drifted to 6.4 is a common, hard-to-diagnose problem. The AI313 lets a grower or cultivator push the probe directly into the medium and get a confirmed reading in seconds.
It's also fully functional for standard nutrient solution spot-checks, reservoir testing, or any aqueous measurement — so one tool covers substrate verification and daily solution testing. Tissue culture labs, post-harvest processing teams, and QA personnel running water-activity or pH compliance checks on biomass will find the spear geometry practical for those applications as well.
The Swiss LabSen spear electrode uses an open junction and long-life polymer reference system. It is fully replaceable, meaning the meter body remains serviceable long after the original probe reaches end of life — a meaningful cost consideration for commercial operations running continuous testing schedules.
Calibration is 1–3 point automatic with built-in buffer recognition at pH 4.00, 7.00, and 10.01. Automatic Temperature Compensation (ATC) runs across the full 0–50 °C range, keeping readings accurate through cold rooms, ambient veg environments, and warm flower rooms alike. The high/low reading alarm triggers a red backlight when measurements fall outside operator-set limits — useful for inline QA without requiring staff to interpret numbers on the fly. Auto stable-value recognition removes the guesswork of when to record a reading, and auto-shutoff conserves battery. Rated battery life is up to 2,000 hours on standard AAA cells.
The complete kit includes premixed pH 4.00, 7.00, and 10.01 calibration buffer solutions, 3M KCl electrode storage solution, calibration bottles, AAA batteries, a lanyard, and a portable carrying case. Everything needed to get the meter into service on day one is in the box.
In a production facility, pH drift in substrate is one of the quieter yield killers — it suppresses uptake of specific nutrient elements without producing obvious visual symptoms until the damage is done. Having a probe that can read directly in the medium (coco slabs, cubes, amended soil beds, peat-based mixes) at canopy level, without sending samples to a lab or preparing a 1:2 soil-water slurry, puts actionable data in the hands of the grower during the daily walkthrough.
The AI313 is compact enough to carry on a belt clip, robust enough for daily use in a humid greenhouse or sealed indoor environment, and accurate enough (±0.01 pH) to catch the kind of sub-unit drift that matters for cannabis production. Pair it with a calibrated EC pen for a complete on-floor substrate monitoring kit. Probe replacement extends meter life indefinitely, which holds the per-test cost low over a multi-year production run.
| SKU | AI313 |
| Model | PH60S |
| pH Measuring Range | -2.00 to 16.00 pH |
| pH Accuracy | ±0.01 pH |
| pH Resolution | 0.01 pH |
| Temperature Accuracy | ±0.5 °C |
| ATC Range | 0 – 50 °C (32 – 122 °F) |
| Calibration | 1–3 point auto, buffers pH 4.00 / 7.00 / 10.01 |
| Electrode | Swiss LabSen 753 spear, replaceable, double-junction |
| Ingress Protection | IP67 waterproof & dustproof |
| Battery Life | Up to 2,000 hours (AAA batteries) |
| Warranty | 2 years (meter) / 6 months (probe) |
Yes. The Swiss spear electrode is designed for direct insertion into solid and semi-solid substrates. Push the probe into the slab or medium, wait for the stable-reading indicator, and record. No slurry prep needed. It also works in standard nutrient solution, so one meter handles both substrate and reservoir checks.
Probe lifespan depends on usage frequency, substrate type, and how well the probe is stored in KCl solution between uses. Apera's warranty covers the probe for 6 months from delivery. Because the probe is fully replaceable (sold separately as the PH60S-E), the meter body has an indefinitely extendable service life — you replace only the electrode, not the whole instrument.
The PH60S auto-recognizes standard NIST buffers at pH 4.00, 7.00, and 10.01. The kit ships with premixed, ready-to-use buffer solutions at all three points, plus 3M KCl electrode storage solution. No additional buffer purchase is required to start using the meter.
The meter is rated at ±0.01 pH accuracy with auto temperature compensation across 0–50 °C. That resolution is sufficient to detect the sub-0.5 pH drift that causes nutrient lockout in cannabis cultivation. The high/low alarm function lets operators set acceptable pH limits so out-of-range readings are flagged automatically during walkthroughs.
IP67 means the meter is rated for temporary immersion in up to 1 meter of water for 30 minutes, and is fully dustproof. That rating is appropriate for use in high-humidity flowering rooms, greenhouses, and wet processing areas. The meter should not be submerged beyond those parameters, and the probe cap should be in place during storage.
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