YSI pH10 Portable Waterproof pH and Temperature Pen Meter

Overview

The YSI pH10 Portable Waterproof pH and Temperature Pen Meter is a compact, field-ready electrochemical instrument engineered for precision, reliability, and operational simplicity in demanding environments. Based on potentiometric measurement principles, it determines hydrogen ion activity via a glass pH electrode coupled with an integrated platinum resistance thermometer (Pt1000 or equivalent) for simultaneous temperature measurement. Its dual-sensor architecture enables real-time automatic temperature compensation (ATC) across the full 0.0–99.9 °C range—critical for maintaining pH accuracy under variable thermal conditions. Designed to meet the practical needs of environmental monitoring, wastewater treatment, aquaculture, food safety QA/QC, and educational laboratories, the pH10 delivers traceable, repeatable measurements without requiring benchtop infrastructure or complex setup.

Key Features

• High-accuracy pH measurement with ±0.02 ±1 digit specification and 0.01 resolution—validated against certified buffer standards.
• IP67-rated rugged housing ensures complete protection against dust ingress and immersion in water up to 1 meter for 30 minutes—ideal for outdoor, industrial, or humid lab settings.
• Graphical LCD display simultaneously shows pH value, temperature reading, date, time, and intuitive status icons—including battery level and calibration mode indicators.
• Tool-free, user-replaceable pH electrode module (compatible with optional kit 605113) minimizes downtime and extends total cost of ownership.
• Auto-buffer recognition supports both USA (pH 4.01, 7.00, 10.01) and NIST (pH 4.01, 6.86, 9.18) standard calibration protocols—eliminating manual buffer selection errors.
• Real-time clock (RTC) and non-volatile memory store up to 50 measurement records with full metadata: pH, temperature, date, and timestamp—enabling basic traceability and field data logging.
• GLP-compliant functionality includes secure calibration history storage with date/time stamps—supporting internal quality audits aligned with ISO/IEC 17025 and laboratory accreditation requirements.
• Intelligent power management features auto-shutdown after 8 minutes of inactivity and low-battery warning—extending operational life to approximately 35 hours per set of LR44 batteries.

Sample Compatibility & Compliance

The YSI pH10 is optimized for aqueous solutions with conductivity ≥50 µS/cm and low to moderate ionic strength. It is not intended for non-aqueous solvents, highly viscous media, or samples containing high concentrations of fluoride, sulfide, or proteins that may poison the reference junction. The device complies with IEC 60529 for IP67 ingress protection and meets essential electromagnetic compatibility (EMC) requirements per EN 61326-1:2013 for laboratory and industrial use. While not certified for intrinsic safety (ATEX/IECEx), its low-power design and sealed construction make it suitable for general-purpose field deployment in non-hazardous locations. Electrode replacement kits are designed to maintain metrological continuity per manufacturer-recommended maintenance intervals.

Software & Data Management

The pH10 operates as a standalone instrument with no proprietary software dependency. All stored data (50 entries) can be manually transcribed or exported via visual inspection of the LCD. For integration into structured QA workflows, users may document calibration events and measurement logs in external electronic lab notebooks (ELNs) or LIMS systems. The embedded GLP functionality satisfies minimum documentation requirements for ISO 9001 and ISO/IEC 17025 accredited laboratories—including retention of calibration dates, buffer IDs used, and measured slope/mV offset values where applicable. No firmware updates or driver installation is required; all configuration is performed directly via front-panel controls.

Applications

• Field-based environmental monitoring: surface water, groundwater, stormwater runoff, and wetland pH profiling.
• Wastewater treatment plant process control: influent/effluent verification, neutralization tank monitoring, and sludge characterization.
• Aquaculture and hydroponics: routine nutrient solution pH tracking and diurnal stability assessment.
• Food and beverage production: rinse water verification, brine bath monitoring, and pre-packaging quality checks.
• Educational laboratories: undergraduate chemistry and environmental science experiments requiring portable, robust instrumentation.
• Facility maintenance: HVAC cooling tower water chemistry screening and boiler feedwater preliminary assessment.

FAQ

What calibration buffers are supported by the YSI pH10?

The instrument automatically recognizes both USA and NIST standard buffer sets—no manual selection required. Compatible buffers include pH 4.01, 7.00, and 10.01 (USA) or pH 4.01, 6.86, and 9.18 (NIST).
Can the pH10 be used in seawater or high-salinity samples?

Yes, provided the sample conductivity exceeds 50 µS/cm and the electrode is properly maintained. Frequent rinsing with deionized water after seawater use is recommended to prevent junction clogging.
Is the electrode replaceable without tools?

Yes—the modular electrode assembly allows full replacement using only finger-tightening; no screwdrivers or specialized tools are needed.
Does the pH10 support data export to a computer?

No native USB or Bluetooth interface is included. Data must be recorded manually from the display or logged externally via ELN/LIMS entry.
How does the GLP functionality support laboratory compliance?

Calibration history—including date, time, buffer IDs, and measured electrode response—is retained in non-volatile memory, fulfilling core recordkeeping requirements for ISO 9001 and ISO/IEC 17025 internal audits.