Thermo Scientific Orion 3-Star 310P-02 Precision Benchtop pH Meter
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | 3-Star 310P-02 |
| Pricing | Upon Request |
Overview
The Thermo Scientific Orion 3-Star 310P-02 Precision Benchtop pH Meter is an engineered electrochemical measurement platform designed for high-accuracy, traceable pH and redox (ORP) analysis in regulated and research-intensive laboratory environments. Built upon a robust analog-to-digital architecture with low-noise signal conditioning, the instrument employs potentiometric measurement principles compliant with ASTM D1293, ISO 10523, and USP . Its core functionality centers on high-resolution potential difference detection between a glass pH sensing electrode and a reference half-cell—converted to pH via the Nernst equation—while simultaneously supporting direct mV, RmV, and EH modes referenced to the Standard Hydrogen Electrode (SHE). The system integrates temperature-compensated electrode response modeling using either built-in ATC (Automatic Temperature Compensation) or manual input, ensuring thermodynamic consistency across aqueous samples ranging from acidic fruit juices to alkaline soil extracts and industrial wastewater.
Key Features
- Precision pH measurement range: −2.000 to 19.999 pH, with selectable resolution of 0.1 / 0.01 / 0.001 pH units
- Relative pH accuracy: ±0.001 pH at 25 °C, validated per NIST-traceable calibration standards
- Multi-point calibration support: 1–5 point auto-calibration using US/NIST, DIN, or user-defined buffer sets (e.g., 1.68, 4.01, 7.00, 10.01, 12.46)
- Redox potential measurement: ±1999.9 mV range, 0.1 mV resolution, ±0.1 mV or ±0.05% of reading (whichever is greater)
- Temperature measurement: −5 to 105 °C; resolution 0.1 °C (−5 to 99.9 °C), 1.0 °C (>99.9 °C); accuracy ±0.1 °C
- Smart Stability™ algorithm dynamically adjusts response threshold based on signal noise, reducing stabilization time without compromising endpoint integrity
- Smart Averaging™ function applies weighted moving average over user-defined time windows to enhance repeatability in heterogeneous or viscous matrices
- Integrated self-diagnostic suite evaluates meter electronics, electrode impedance, asymmetry potential, and junction stability in real time
- Benchtop-specific hardware interfaces: pH-BNC, miniDIN temperature port, and 3.5 mm phone jack for optional magnetic stirrer control
Sample Compatibility & Compliance
The 310P-02 is optimized for use with double-junction, refillable, or gel-filled pH electrodes—including the included Orion 9172BNWP combination electrode with integrated ATC sensor—enabling reliable measurements in high-ionic-strength, viscous, or particulate-laden samples such as dairy products, fermented beverages, sludge filtrates, and saturated soil extracts. Its IP54-rated enclosure meets IEC 60529 for dust resistance and limited water splashing protection during benchtop operation. Regulatory compliance includes CE marking (EMC & LVD), UL 61010-1, CSA C22.2 No. 61010-1, TÜV-certified safety, and FCC Class A emissions. When configured with optional FDA 21 CFR Part 11-compliant software modules, the system supports audit-trail generation, electronic signatures, and role-based access control required for GLP and GMP environments.
Software & Data Management
The instrument stores up to 200 GLP-compliant measurement records, each timestamped with sample ID, operator ID, electrode serial number, calibration history, temperature, and environmental conditions. It retains the last 10 calibration events—including slope, offset, and buffer recognition data—with full traceability. Ten user-defined method protocols can be saved and password-protected to enforce standardized workflows across multi-operator labs. Bidirectional RS232 communication enables direct data export to LIMS or spreadsheet applications; USB adapter support (optional) facilitates firmware updates and method downloads via Thermo Fisher’s Orion Link software. All internal memory is non-volatile and retains data during power cycling or battery replacement.
Applications
This benchtop pH meter serves quality control laboratories in food & beverage (e.g., pH monitoring in juice pasteurization, beer mash conditioning, cheese whey analysis), environmental testing (wastewater effluent compliance per EPA Method 9040C, soil pore-water characterization), pharmaceutical manufacturing (buffer preparation verification, cleaning validation), and academic research requiring reproducible electrochemical endpoints. Its extended pH range and ORP capability make it suitable for studying acid-base equilibria in non-aqueous mixtures, corrosion inhibition studies, and redox titration endpoint detection.
FAQ
Does the 310P-02 support automatic temperature compensation with all electrode types?
Yes—when paired with an ATC-equipped electrode (e.g., 9172BNWP), the meter performs real-time temperature correction using the Nernst equation; manual temperature entry is available for non-ATC sensors.
Can calibration data be exported for regulatory review?
Yes—calibration logs and measurement records are exportable via RS232 or USB in CSV format, retaining full metadata required for FDA or ISO 17025 audits.
Is the instrument compatible with third-party pH electrodes?
It accepts any standard BNC-output pH electrode and miniDIN temperature probe meeting IEC 60746-1 electrical interface specifications.
What power options are available for continuous lab operation?
The unit operates on four AA alkaline batteries (up to 2,000 hours standby) or a universal AC adapter (included), enabling uninterrupted use during extended batch analyses.
How does Smart Stability™ differ from conventional fixed-time averaging?
Unlike fixed-interval averaging, Smart Stability™ continuously monitors signal variance and declares equilibrium only when drift falls below configurable thresholds—minimizing user bias and improving inter-laboratory reproducibility.
