Premium Series Portable pH Conductivity/TDS/Salinity Meter Kit

What the PC8500 Is

The Apera PC8500 is the company's Premium Series portable multi-parameter meter, sold as a complete kit under SKU AI5524. It accepts up to three electrodes simultaneously, enabling concurrent measurement of pH, mV (ORP-ready), conductivity, TDS, salinity, and temperature in a single handheld instrument. The kit ships with the 201T-F 3-in-1 pH/temperature electrode and the 2301T-S conductivity/temperature electrode — both included — along with calibration solutions, calibration bottles, a USB cable, and a carrying case. The foldable stand converts the unit to benchtop configuration when bench use is more practical.

At its core, the PC8500 is designed to bring laboratory-grade measurement accuracy into the field without sacrificing portability or durability. The dual-line backlit LCD simultaneously displays the primary parameter reading alongside temperature, with icons for measurement stability and calibration completion status — so operators know exactly when a reading has settled before recording it.

Built for Commercial Cultivation Environments

Grow facilities are hard on instrumentation — humidity, nutrient splash, fertigation lines, and daily handling all take a toll on standard meters. The PC8500 is rated IP57: sealed against dust ingress and capable of withstanding immersion, with a silicone grip cover and silicone-protected electrode sockets shielding the instrument from general impact and moisture. It is purpose-built for repeated, routine use in conditions that would degrade lesser meters.

For licensed cannabis and hemp operators, accurate pH and EC/TDS control at every fertigation point is non-negotiable for yield consistency and regulatory traceability. The PC8500's GLP (Good Laboratory Practice) data management stores up to 500 data sets — manually or on an automatic timing interval — and exports via USB (Windows-compatible) for run logs, batch records, or QA documentation. The meter also supports ORP measurement when paired with the optional 301Pt-C ORP electrode, adding dissolved oxidant monitoring for reservoir sanitation and water treatment applications.

pH and Conductivity Performance

The included 201T-F electrode uses Apera's proprietary lithium lead-free glass membrane, which provides fast signal response and stable readings at ±0.01 pH (±1 digit) across the full -2.00 to 16.00 pH range. Auto 1–3 point calibration automatically recognizes pH standards at 1.68, 4.00, 7.00, 10.01, and 12.45. After the second and third calibration points, slope data is displayed on screen — a direct indicator of electrode condition and calibration quality. The built-in self-diagnosis function flags calibration errors and guides the user through corrective steps. The BNC connector is universal and compatible with Apera's full LabSen professional electrode line for specialized applications.

The 2301T-S conductivity electrode is built on Apera's Brush-resistant Platinum Black (BPB) cell technology, delivering ±1% F.S. accuracy across an ultra-wide 0–200 mS/cm (0–200,000 µS/cm) range — spanning from ultra-pure water to high-salinity feeds without electrode swaps. Both electrodes integrate their own temperature sensors, providing independent automatic temperature compensation (ATC) for each parameter. Single-tap mode switching cycles the display between conductivity, TDS, salinity, and resistivity, with a user-adjustable TDS conversion factor settable from 0.40 to 1.00 to match nutrient solution chemistry.

How It Fits a Commercial Grow Build

In a multi-zone commercial facility — whether running rockwool, coco, DWC, or recirculating NFT — the PC8500 functions as the primary handheld QC instrument for water quality verification at multiple checkpoints: reservoir incoming, post-injection fertigation, runoff collection, and drain-to-waste sampling. The simultaneous multi-electrode input means a single instrument covers pH and EC verification at the same dip, cutting verification time per sample point.

The meter's three-year instrument warranty (six months for probes) and field-serviceable electrode design mean that the probe wears separately from the meter body — reducing total cost of ownership compared to fixed-probe units. USB data export integrates with existing cultivation management documentation workflows without requiring proprietary software subscriptions. For operators scaling a new build, adding canopy, or formalizing their QC protocol, the PC8500 provides the measurement range and data management backbone to support a mature, documented water quality program across the full run cycle.