The Apera PH60-VS (AI3733) is a professional handheld pH meter designed for accurate measurements in viscous, semi-solid, high-salinity, and chemically complex liquid samples. It combines the PH60 IP67-rated portable meter with the Swiss-made LabSen 855 pre-pressurized glass-body pH/temperature electrode. Unlike conventional electrodes that rely on passive electrolyte diffusion, the LabSen 855 uses internal pressure to drive electrolyte flow through the junction, helping prevent clogging and reference drift when testing thick nutrient slurries, coatings, resins, and paste-like materials. Its HA glass membrane is designed to minimize alkaline measurement error in high-salinity and chemically complex samples. The meter provides ±0.01 pH accuracy, automatic temperature compensation, stable-reading recognition, and a three-color backlit display for measurement, calibration, and out-of-range alerts. (Hydro Supply Co.)
• Product Type: Handheld pH meter kit for viscous and complex samples
• Brand: Apera Instruments
• Model: PH60-VS
• SKU: AI3733
• Measurement Parameters: pH and temperature
• pH Measurement Range: −2.00 to 16.00 pH
• pH Accuracy: ±0.01 pH
• pH Resolution: 0.01 pH
• Temperature Compensation: Automatic (ATC), 0–50°C
• Temperature Accuracy: ±0.5°C
• Temperature Sensor: Integrated 30 kΩ NTC thermistor in the electrode
• Included Electrode: Swiss-made LabSen 855 pre-pressurized glass-body pH/temperature electrode
• Electrode Technology: Pre-pressurized electrolyte system designed to maintain flow and reduce junction clogging in viscous samples
• Glass Membrane: HA glass designed to minimize alkaline error in high-salinity and chemically complex solutions
• Reference System: Silver Ion Trap designed to maintain stable reference potential
• Calibration: Up to 3-point automatic calibration using pH 4.00, 7.00, and 10.01 buffers
• Buffer Recognition: Automatically recognizes pH 1.68, 4.00, 7.00, 10.01, and 12.45 standards
• Reading Stability: Stable-value recognition and automatic hold lock settled readings for recording
• Display: LCD with three-color backlighting—blue for measurement, green for calibration, and red for out-of-range alerts
• Waterproof Rating: IP67
• Power-Saving Feature: Automatic power-off after 8 minutes of inactivity
• Electrode Compatibility: LabSen 855 uses an 8-pin connector and is compatible with supported Apera pocket, portable, and benchtop meters, including PH60, PH60-Z, PH400, PC400, SX751, and SX736
• Primary Applications: Viscous liquids, nutrient concentrates, slurries, coatings, resins, and high-salinity samples
• Cultivation Applications: Coco slurry checks, silica suspensions, concentrated nutrient formulations, and foliar solutions at working concentration
• Other Applications: pH verification for suitable concentrates, topicals, and oil-based product formulations
• Included Accessories: PH60 meter body, LabSen 855 electrode, pH 4.00/7.00/10.01 calibration buffers, soaking solution, CalPod solution organizer, AAA batteries, lanyard, and rugged carrying case
• Meter Warranty: 2 years
• Electrode Warranty: 6 months
Key Advantage: The Apera PH60-VS combines portable pH measurement with a pre-pressurized electrode specifically designed to reduce clogging and unstable readings in thick or complex samples. Its HA glass membrane helps minimize alkaline error in high-salinity solutions, while automatic calibration and stable-reading recognition simplify routine quality checks. It can also measure ordinary aqueous nutrient solutions, but the specialized electrode is most valuable when viscous, semi-solid, or high-salinity samples are part of the regular workflow.