Value Series Portable Blade Spear pH Meter Kit for Meat

What It Is

The Apera PH850-MT is a portable pH and temperature meter bundled with the LabSen 763 blade spear electrode — a probe built specifically for direct insertion into solid and semi-solid sample matrices. Where a standard pH probe requires a liquid solution or slurry, the LabSen 763's food-grade titanium blade tip penetrates dense material cleanly, placing the S-type spear glass membrane in direct contact with the sample without damaging the sensing element.

The meter platform is Apera's PH850 — a field-grade portable unit with IP57 waterproof and dustproof protection, a silicone grip sleeve, and a foldable stand that doubles as a benchtop configuration when needed. Power comes from AAA batteries (×3). The full kit ships in a rugged carrying case with calibration buffer solutions (pH 4.00, 7.00, and 10.01 at 50 mL each), a screwdriver, and the printed manual.

Electrode Technology: LabSen 763

Apera's LabSen 763 electrode is built around sensor technology and materials sourced from Switzerland. The S-type spear glass membrane is rated approximately 10 times stronger than conventional glass bulb membranes — it handles the mechanical stress of cutting through dense material without fracturing. Readings stabilize in 15 to 30 seconds after insertion.

The reference system uses an open-and-ceramic double-junction design with polymer electrolyte to maintain full sample contact while resisting junction clogging from particulates. Apera's proprietary blue gel inner solution is non-flowing — it generates no air bubbles and functions correctly even when the probe is held inverted. No electrolyte refill is ever required. A built-in thermistor feeds temperature data directly to the meter for automatic temperature compensation (ATC) without a separate probe.

Meter Features and Intelligent Functions

The PH850 meter runs 1-to-3-point automatic calibration, auto-recognizing standard buffer values at pH 1.68, 4.00, 7.00, 10.01, and 12.45 from both USA and NIST series. After a second or third calibration point, the meter displays electrode slope — a direct indicator of probe health. The self-diagnosis routine flags out-of-range readings and detects electrode invalidation, cutting down on false data before it reaches a logbook.

Three configurable reading stability criteria let you tune response behavior to the sample type. Auto power-off conserves battery life in the field. An on-screen stability icon confirms when a reading is settled enough to record. For operators who want ORP data alongside pH, the meter accepts an ORP probe (Apera model 301Pt-C, sold separately) in mV mode.

Where It Fits in a Cultivation or Post-Harvest Operation

Most pH meters on a grow or processing floor are set up for liquid — nutrient solution, irrigation water, or extracts in suspension. The PH850-MT fills the gap when you need pH data from something that isn't a liquid: plant tissue cores, cured flower or biomass bricks, concentrates with solid carrier matrices, or food-adjacent products in a licensed hemp processing environment.

The IP57 rating and silicone sleeve mean the meter survives a processing environment — rinse-downs, humid cure rooms, and the general abuse of production use. The foldable stand is practical for bench-side work where the meter sits while the probe is being cleaned or reconditioned between samples. For operators running regular post-harvest QC protocols or third-party compliance checks that include pH as a reported parameter, having a dedicated solid-sample meter removes a workflow bottleneck. Warranty is 3 years on the instrument and 6 months on the probe.