Thermo Scientific Orion Star A214/A324 Benchtop and Portable pH/ISE Ion Concentration Meter
| Origin | Singapore |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | A214 (Benchtop), A324 (Portable) |
| Instrument Type | Benchtop / Portable Multiparameter Electrochemical Analyzer |
| Parameter Types | pH, mV/RmV, ISE (Ion Concentration), Temperature |
| pH Range | –2.000 to 20.000 |
| ISE Range | 0–19999 (unitless or in ppm, mg/L, M, %, ppb) |
| pH Resolution | 0.001 |
| ISE Resolution | Up to 4 significant digits |
| pH Accuracy | ±0.001 |
| mV Accuracy | ±0.1 mV |
| Temperature Range | –5 to 105 °C (RDO mode: 0–50 °C) |
| Temperature Accuracy | ±0.1 °C |
| Data Storage | 2000 (A214), 5000 (A324) GLP-compliant records |
| Calibration Points | Up to 6 (pH/ISE), up to 5 (portable) |
| Compliance | GLP, ASTM D1293, ISO 10523, USP <791>, FDA 21 CFR Part 11 (via optional software audit trail) |
Overview
The Thermo Scientific Orion Star A214/A324 is a modular, high-precision electrochemical measurement platform engineered for laboratory and field-based quantitative analysis of pH, ion-selective electrode (ISE) responses, redox potential (ORP), and temperature. Based on potentiometric principles, the system measures the voltage difference between a sensing electrode (e.g., glass pH electrode or ion-selective membrane electrode) and a stable reference electrode under controlled ionic strength and temperature conditions. The instrument employs advanced analog-to-digital conversion with auto-ranging circuitry and real-time temperature compensation (ATC) to correct for Nernstian slope drift—ensuring traceable, reproducible measurements across diverse sample matrices. Its dual-platform architecture supports both benchtop (A214) and IP67-rated portable (A324) configurations, making it suitable for quality control labs, environmental monitoring stations, pharmaceutical manufacturing sites, and academic research facilities requiring compliance with GLP, ISO/IEC 17025, and regulatory validation frameworks.
Key Features
- Modular design supporting up to four simultaneous measurement channels: pH/ISE/temperature, conductivity, dissolved oxygen (DO), or LogR (electrode resistance diagnostics)
- Large, high-contrast color LCD display showing real-time readings, channel status, sample ID, user ID, calibration history, and electrode diagnostics
- Auto-Read™ functionality with stability indicator and configurable endpoint detection (timed or slope-based)
- Multi-language interface (English, Chinese, Spanish, French, German, Portuguese) for global laboratory deployment
- Smart electrode recognition: automatic detection of USA/NIST/DIN pH buffer sets; plug-and-play compatibility with Orion ROSS®, TriStar™, and RDO™ sensor families
- Advanced calibration management: editable calibration curves, isopotential adjustment, non-linear blank correction, and incremental/spiking methods (single/dual-point known addition, sample addition)
- Dual power options: AC adapter (90–260 VAC) for benchtop use; four AA batteries (up to 8,000 hours typical life) for extended field operation
- Robust hardware architecture: IP54-rated (A214), IP67-rated (A324); integrated BNC, 8-pin mini-DIN, and 9-pin mini-DIN interfaces for universal probe connectivity
Sample Compatibility & Compliance
The Star A series accommodates aqueous and semi-aqueous samples across industrial, environmental, and life science applications—including wastewater, pharmaceutical buffers, food extracts, soil leachates, and cell culture media. It meets critical regulatory requirements for data integrity and traceability: all stored measurements include timestamps, operator IDs, electrode serial numbers, calibration metadata, and environmental parameters (e.g., atmospheric pressure for DO compensation). Data export via USB or RS232 supports integration with LIMS and electronic lab notebooks (ELN). When paired with Thermo Fisher’s Orion Link™ software, the instrument satisfies FDA 21 CFR Part 11 requirements through electronic signatures, role-based access control, and immutable audit trails. Validation documentation aligns with ASTM D1293 (pH of water), ISO 10523 (water quality), and USP (pH measurement in pharmaceutical preparations).
Software & Data Management
Onboard memory stores 2,000 (A214) or 5,000 (A324) GLP-compliant records, each containing full measurement context: parameter value, unit, temperature, electrode ID, calibration date, and user-defined identifiers. Data logging modes include manual entry, timed intervals (1 sec–99 hr), and event-triggered capture. Editing functions allow selective deletion (single, range, or all entries) without compromising audit integrity. Export is supported via USB mass storage mode or RS232 serial protocol. Orion Link™ PC software enables graphical trend analysis, statistical reporting (mean, SD, RSD), custom report generation (PDF/CSV), firmware updates, and remote configuration—fully compatible with Windows 10/11 and validated for GxP environments.
Applications
- Pharmaceutical QC: pH and ion concentration verification of injectables, excipients, and cleaning validation swab solutions per USP and EP 2.2.3
- Environmental monitoring: Field-based ISE measurements of fluoride, nitrate, ammonium, and heavy metals in groundwater and surface water per EPA Method 300.0 and ISO 10304
- Food & beverage: Titratable acidity assessment, brine salinity control, and preservative ion quantification (e.g., nitrite in cured meats)
- Academic research: Kinetic studies requiring synchronized pH/ISE/temperature acquisition during reaction monitoring
- Water treatment: Real-time tracking of alkalinity, hardness precursors (Ca²⁺, Mg²⁺), and disinfectant residuals (Cl⁻, F⁻)
FAQ
Does the Star A214/A324 support Good Laboratory Practice (GLP) compliance?
Yes—each stored measurement includes mandatory GLP fields: date/time stamp, operator ID, electrode serial number, calibration verification status, and environmental conditions. Audit-ready reports can be exported directly or via Orion Link™ software.
Can I perform ISE measurements without a separate temperature probe?
Yes—the pH/ISE/temperature module integrates ATC via an 8-pin mini-DIN connector; no external thermistor is required for standard measurements.
What calibration standards are supported for pH and ISE?
The instrument auto-recognizes USA, NIST, and DIN pH buffer sets. For ISE, users may define custom calibration points using known standards in ppm, mol/L, mg/L, or %, with optional spiking protocols to minimize matrix interference.
Is firmware update capability built-in?
Yes—updates are delivered via USB flash drive or RS232 connection using Orion Link™ software; version history and update logs are retained onboard.
How does the instrument handle low-concentration ISE measurements?
It applies non-linear auto-blank correction and stability-based endpoint detection to improve signal-to-noise ratio, particularly for sub-ppm analyte levels in complex matrices.
