Sartorius PT-10 Portable pH/mV Meter
| Brand | Sartorius |
|---|---|
| Origin | Germany |
| Model | PT-10 |
| IP Rating | IP67 (Waterproof) |
| Calibration | Auto-buffer recognition & electrode diagnostics |
| Temperature Compensation | Automatic (ATC) |
| Display | Backlit LCD with intuitive icon-based interface |
| Measurement Modes | pH (0.00–14.00), mV (±1999.9 mV) |
| Resolution | 0.01 pH / 0.1 mV |
| Accuracy | ±0.01 pH / ±0.2 mV |
| Operating Temperature | 0–50 °C |
| Power Supply | 4 × AAA batteries (approx. 2,000 hours continuous use) |
Overview
The Sartorius PT-10 Portable pH/mV Meter is an engineered field-deployable electrochemical instrument designed for reliable, on-site measurement of hydrogen ion activity (pH) and redox potential (mV) in diverse environmental, industrial, and educational settings. Based on potentiometric principle using a glass pH electrode and reference system, the PT-10 delivers traceable measurements compliant with ISO 7888 and ASTM D1293 standards for water quality testing. Its compact, ergonomic housing—constructed from chemically resistant ABS polymer—and IP67-rated enclosure ensure operational integrity under rain, dust, or incidental submersion (up to 1 m for 30 min), making it suitable for wastewater monitoring, aquaculture management, soil slurry analysis, and routine QC checks in food processing facilities where laboratory access is limited.
Key Features
- Auto-buffer recognition across three standard calibration points (pH 4.01, 7.00, 10.01), eliminating manual buffer selection errors and reducing calibration time by up to 40%.
- Real-time electrode health diagnostics during calibration: the meter evaluates slope (% recovery), offset (mV), and response time, alerting users to degraded or contaminated electrodes before erroneous data is recorded.
- Integrated automatic temperature compensation (ATC) via a built-in NTC thermistor sensor; eliminates manual temperature entry and corrects pH readings per the Nernst equation across 0–50 °C.
- Backlit monochrome LCD with context-sensitive icons (e.g., battery status, calibration mode, ATC active, electrode error), enabling unambiguous interpretation under low-light or outdoor conditions.
- Long-life power architecture: powered by four standard AAA alkaline batteries with >2,000 hours of typical operation; low-battery indicator provides ≥8 hours of residual runtime after warning activation.
- One-button operation for measurement hold, calibration initiation, and unit toggle—minimizing training requirements for field technicians and non-specialist users.
Sample Compatibility & Compliance
The PT-10 accommodates standard BNC-compatible pH electrodes—including double-junction, gel-filled, and refillable models—enabling adaptation to high-ionic-strength samples (e.g., seawater, brines), low-conductivity media (e.g., deionized water, rainwater), and viscous or particulate-laden suspensions when paired with appropriate probe geometries (e.g., flat-surface or spear-tip electrodes). All measurements adhere to GLP documentation prerequisites: date/time stamping, operator ID input (via optional PC software), and non-volatile memory storage of last calibration parameters (slope, offset, date). The device conforms to IEC 61010-1 for electrical safety and EN 61326-1 for electromagnetic compatibility in industrial environments.
Software & Data Management
While the PT-10 operates autonomously without connectivity, its calibration logs and measurement history (up to 100 entries) can be exported via optional RS-232 cable and Sartorius LabX Lite software (Windows-compatible). This enables CSV export for LIMS integration, audit trail generation per FDA 21 CFR Part 11 (with user authentication and electronic signature support), and trend analysis across sampling campaigns. Firmware updates are distributed through Sartorius’ secure customer portal, ensuring continued alignment with evolving metrological best practices.
Applications
- Environmental fieldwork: rapid pH/mV profiling of rivers, lakes, groundwater wells, and sediment pore water during EPA Method 9040B or ISO 10523-compliant surveys.
- Food & beverage production: spot-checking rinse water pH in CIP systems, monitoring fermentation broth acidity, and verifying sanitizer solution efficacy (e.g., chlorine-based disinfectants).
- Aquaculture & hydroponics: daily tracking of pond or reservoir pH stability to prevent stress-induced mortality in finfish or inhibit pathogen proliferation in recirculating systems.
- Educational laboratories: undergraduate electrochemistry experiments involving buffer preparation, electrode characterization, and Nernstian behavior validation.
- Pharmaceutical water systems: preliminary assessment of purified water (PW) and water-for-injection (WFI) distribution loop segments prior to formal USP conductivity/pH verification.
FAQ
Does the PT-10 support two-point or three-point calibration?
Yes—the meter supports both two-point (e.g., pH 7.00 + 4.01) and three-point (pH 4.01/7.00/10.01) calibration routines with auto-buffer detection.
Is a temperature probe required for ATC?
No—the integrated NTC sensor eliminates the need for external temperature probes, though optional external Pt1000 probes may be connected for specialized applications requiring higher spatial resolution.
Can calibration data be traced to national standards?
Yes—calibration certificates for Sartorius-certified buffers (traceable to NIST SRM 186, BAM, or PTB standards) are provided with each buffer kit, supporting ISO/IEC 17025-compliant uncertainty budgets.
What is the warranty coverage for the PT-10?
Sartorius offers a 24-month limited warranty covering material and workmanship defects, extendable to 36 months with registration and proof of annual calibration by an accredited service provider.
Is the PT-10 compatible with Sartorius’ electrode portfolio?
Yes—it is fully interoperable with Sartorius’ full range of pH electrodes, including the Apera™-branded InLab® series, and supports third-party BNC electrodes meeting DIN 19263 mechanical and electrical specifications.
