Hach LA-pH10 Benchtop pH Meter
| Brand | Hach |
|---|---|
| Origin | Imported |
| Manufacturer Type | Manufacturer |
| Instrument Type | Benchtop |
| Parameter Type | Single-Parameter |
| Measurement Accuracy | ±0.01 pH |
| Measurement Range | 0.00–14.00 pH |
| Resolution | 0.01 pH |
| Calibration Buffer Options | Chinese Standard (GB), US NIST, Japanese JIS |
Overview
The Hach LA-pH10 is a precision-engineered benchtop pH meter designed for routine, high-reproducibility pH measurements in regulated and non-regulated laboratory environments. Built upon Hach’s legacy of electrochemical instrumentation expertise, the LA-pH10 employs potentiometric measurement principles—detecting the potential difference between a glass pH-sensing electrode and a stable reference electrode immersed in aqueous solution—to deliver traceable, thermodynamically grounded pH values per ISO 3696 (Grade 3 water), ASTM D1293, and USP . Its architecture integrates analog signal conditioning with digital stabilization algorithms to minimize drift and thermal noise, ensuring consistent performance across ambient temperature fluctuations (10–40 °C). Unlike legacy analog meters or entry-level digital units lacking audit capability, the LA-pH10 is engineered for operational transparency in quality-controlled workflows—particularly in municipal water treatment labs, wastewater QA/QC departments, academic teaching laboratories, and industrial process support settings where regulatory awareness and procedural fidelity are foundational.
Key Features
- 3A Assistive Design Framework: A human-centered interface system comprising Assistive Bar (real-time stability progress bar with audible lock confirmation), Assistive Pad (slide-out quick-reference guide for calibration and measurement protocols), and Assistive Tube (integrated electrode storage sleeve with defined placement geometry to prevent mechanical stress and junction drying).
- Single-Button Workflow Optimization: Four dedicated tactile keys enable full instrument control—including mode selection, calibration initiation, reading hold, and unit toggle—without menu navigation or touchscreen dependency.
- Triple-Combination pH Electrode (3-in-1): Integrated glass sensing bulb, Ag/AgCl reference element, and refillable KCl electrolyte chamber housed in a chemically resistant, cleanable polypropylene body; optimized for longevity in turbid, low-ionic-strength, or mildly fouling samples.
- Calibration Flexibility: Supports three internationally recognized buffer sets—Chinese GB/T 604–2002 (pH 4.01, 6.86, 9.18 at 25 °C), US NIST SRM (pH 4.01, 7.00, 10.01), and Japanese JIS Z 8802 (pH 4.01, 6.86, 9.18)—with automatic buffer recognition during two- or three-point calibration sequences.
- Ergonomic & Lab-Integrated Form Factor: Adjustable-height electrode stand with 360° swivel joint and clamping range (Ø10–16 mm), front-facing high-contrast LCD (128 × 64 pixels), and IP20-rated enclosure compliant with IEC 61010-1 for laboratory use.
Sample Compatibility & Compliance
The LA-pH10 is validated for use with aqueous solutions having conductivity ≥50 µS/cm and temperature range 5–50 °C. It complies with IEC 61326-1 (EMC for laboratory equipment) and meets CE marking requirements under the EU Low Voltage Directive. While not 21 CFR Part 11–enabled out-of-the-box, its stable analog-to-digital conversion path and deterministic calibration logging (timestamped buffer IDs, slope/mV offset, asymmetry potential) support GLP-aligned documentation when paired with Hach’s optional LabStation software or third-party LIMS interfaces. The instrument satisfies minimum performance criteria referenced in ISO 17025:2017 Clause 6.4.3 for pH measurement uncertainty estimation.
Software & Data Management
The LA-pH10 operates as a standalone instrument with internal memory storing up to 200 measurement records—including date/time stamp, measured pH, temperature, calibration parameters, and operator ID (manually entered). Data export is supported via RS232 serial interface (9600 baud, no parity) to PCs running terminal emulation or custom data acquisition scripts. Optional Hach LabStation v4.x provides CSV export, trend graphing, calibration history archiving, and PDF report generation—fully compatible with Windows 10/11 and validated for IQ/OQ documentation packages used in pharmaceutical and environmental labs.
Applications
- Routine pH verification in drinking water distribution systems (per EPA Method 150.1 and China’s GB 5749–2022)
- Wastewater influent/effluent monitoring per ISO 10523 and ASTM D1293
- Academic instruction in general chemistry, environmental science, and analytical lab courses
- Process support for chemical dosing control (e.g., coagulant/flocculant optimization)
- Calibration verification of portable pH meters in field deployment programs
FAQ
Does the LA-pH10 support automatic temperature compensation (ATC)?
Yes—it accepts input from an integrated Pt1000 temperature sensor embedded in the supplied combination electrode, applying Nernstian correction per DIN 19265.
Is the electrode refillable?
Yes—the 3-in-1 electrode features a screw-cap electrolyte reservoir compatible with 3.0 M KCl solution; recommended refilling frequency is every 30 days under continuous use.
Can the instrument store calibration data across power cycles?
Yes—calibration coefficients and buffer assignments persist in non-volatile memory without battery backup.
What is the typical electrode lifetime under standard lab conditions?
With proper storage in 3.0 M KCl and weekly cleaning using 0.1 M HCl, the electrode maintains ±0.01 pH accuracy for ≥12 months.
Is technical support available outside business hours?
Hach operates a global 24/7 support portal with multilingual documentation, and regional service centers provide priority response for critical lab operations.
