Alalis pH510 Standard Benchtop pH Meter
| Brand | Alalis |
|---|---|
| Model | pH510 Standard |
| Type | Benchtop pH Meter |
| Measurement Parameters | pH and mV (Redox) |
| pH Range | −2.000 to 19.999 pH |
| pH Resolution | 0.001 / 0.01 / 0.1 pH |
| pH Accuracy | ±0.002 pH |
| mV Range | ±1999.9 mV |
| mV Resolution | 0.1 mV |
| mV Accuracy | ±0.03% FS |
| Temperature Range | −10 to 110 °C |
| Temperature Resolution | 0.1 °C |
| Temperature Accuracy | ±0.4 °C |
| Temperature Compensation | Automatic or Manual (0 to 100.0 °C) |
| Calibration Options | 1–5 point automatic calibration with CH, USA, and NIST buffer series (15 total standard buffers) |
| Special Modes | High-purity water pH mode, ammonia-added pure water pH mode, ORP (E<sub>H</sub>) mode |
| Display | 90 × 68 mm LCD with white backlight, time stamp, large-font readability |
| Data Storage | 500 groups (manual & auto), min/max tracking |
| GLP Compliance | Yes (audit-trail enabled data logging) |
| Connectivity | USB interface with PC software |
| Enclosure Rating | IP54 |
| Power Supply | 9 V DC adapter |
Overview
The Alalis pH510 Standard Benchtop pH Meter is a high-precision electrochemical instrument engineered for reliable, traceable, and repeatable measurement of hydrogen ion activity (pH) and redox potential (mV) in aqueous solutions. Based on potentiometric principle using a glass pH electrode and reference electrode pair, the pH510 delivers laboratory-grade accuracy with ±0.002 pH basic error and 0.001 pH resolution—meeting the metrological requirements for quality control in regulated environments. Its extended pH range (−2.000 to 19.999) accommodates highly acidic, alkaline, and non-aqueous formulations commonly encountered in pharmaceutical development, electroplating bath monitoring, and advanced materials synthesis. Designed for routine use in QC labs, environmental testing facilities, and R&D centers, the pH510 operates under strict adherence to fundamental electrochemical standards—including ISO 7888, ASTM D1293, and USP —and supports full GLP-compliant data management workflows.
Key Features
- Automatic 1–5 point pH calibration with intelligent step-by-step guidance and real-time buffer recognition; compatible with CH, USA, and NIST-certified buffer series (15 total reference solutions)
- Dedicated high-purity water pH mode with resistivity compensation and low-conductivity stabilization algorithms; plus ammonia-added pure water mode for power plant feedwater analysis
- Simultaneous mV (ORP/EH) measurement with ±1999.9 mV range and 0.1 mV resolution for oxidation-reduction process monitoring
- Endpoint stabilization and Auto-Hold functionality—dynamically adjusts response threshold based on signal drift rate to ensure statistically robust endpoint determination
- Large 90 × 68 mm monochrome LCD with white LED backlight, time-stamped readings, and multi-level font sizing for rapid visual verification under variable lighting conditions
- Full temperature compensation from −10 to 110 °C (0.1 °C resolution), selectable between °C and °F units, with optional manual or automatic probe-based input
- IP54-rated enclosure with rubber-sealed electrode ports and integrated dust/moisture protection—validated for continuous operation in industrial lab environments
- Factory-calibrated triple-junction pH electrode (plastic-body composite), high-precision glass pH electrode, and Pt1000 temperature sensor included in standard configuration
Sample Compatibility & Compliance
The pH510 supports direct measurement of liquid samples across diverse matrices: aqueous buffers, fermentation broths, wastewater effluents, pharmaceutical excipients, food extracts, and ultrapure water systems. Its wide dynamic range and adaptive stabilization logic minimize junction potential errors in low-ionic-strength media. The instrument complies with international regulatory frameworks including FDA 21 CFR Part 11 (when used with validated software and audit-trail-enabled USB export), ISO/IEC 17025 documentation requirements, and EU GMP Annex 11 data integrity expectations. All calibration events, measurement records, and system configurations are timestamped and stored with immutable metadata—enabling full traceability during internal audits or regulatory inspections.
Software & Data Management
Equipped with native USB 2.0 interface and bundled Windows-compatible communication software (provided on optical disc), the pH510 enables bidirectional data transfer, remote instrument control, and batch report generation. Stored datasets (up to 500 entries) include pH/mV values, temperature, date/time stamps, calibration history, and electrode status flags. Software exports CSV- and Excel-compatible files with column headers aligned to GLP reporting templates. Audit trail functionality logs all user-initiated actions—including calibration edits, parameter changes, and factory reset events—with operator ID (if configured) and system timestamps—satisfying ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available).
Applications
- Environmental monitoring: Surface water, groundwater, and wastewater pH profiling per EPA Method 150.1 and ISO 10523
- Pharmaceutical QA/QC: Dissolution medium verification, buffer preparation validation, and stability-indicating assays per ICH Q5C
- Food & beverage: Acidification control in dairy processing, shelf-life modeling in canned goods, and HACCP-critical parameter logging
- Chemical manufacturing: Catalyst bath monitoring, corrosion inhibitor efficacy testing, and electroplating solution maintenance
- Academic research: Electrode kinetics studies, membrane transport experiments, and enzyme activity assays requiring sub-millipH resolution
FAQ
Does the pH510 support automatic buffer recognition during calibration?
Yes—the instrument identifies CH, USA, and NIST buffer codes automatically when connected to certified reference solutions, reducing manual entry errors and accelerating calibration workflows.
Can the pH510 measure pH in non-aqueous solvents such as ethanol or acetone?
While primarily optimized for aqueous systems, the pH510 can provide comparative measurements in mixed-solvent systems when paired with appropriate electrodes and documented correction protocols; however, absolute traceability requires matrix-matched calibration per ISO 12076.
Is the included communication software compliant with 21 CFR Part 11?
The base software supports electronic signatures, audit trails, and secure user authentication when deployed on validated IT infrastructure; full Part 11 compliance requires site-specific risk assessment and procedural controls.
What is the warranty coverage for the included electrodes?
The plastic-body triple-combination electrode carries a 12-month limited warranty against manufacturing defects; the high-precision glass electrode is covered for 6 months under normal usage conditions as defined in the product manual.
How does the instrument handle temperature drift during extended measurements?
The pH510 continuously monitors thermal gradients via its integrated Pt1000 sensor and applies real-time compensation using the Nernst equation slope correction—ensuring consistent sensitivity across ambient fluctuations up to ±0.4 °C accuracy.
