DLAB DPH10 Portable pH Meter

Overview

The DLAB DPH10 Portable pH Meter is an engineered electrochemical measurement instrument designed for field-deployable and routine laboratory pH, ORP (Oxidation-Reduction Potential), and temperature analysis. Based on potentiometric measurement principles—utilizing a glass pH electrode and reference junction to detect hydrogen ion activity—the DPH10 delivers high reproducibility and traceable accuracy across extreme pH ranges from -2.000 to 20.000. Its compact, ruggedized architecture supports operation in diverse environments—from wastewater treatment sites and agricultural soil testing to pharmaceutical process water monitoring and academic teaching labs. The inclusion of automatic temperature compensation (ATC) over -10.0 to 135.0 °C ensures thermally corrected pH values compliant with ISO 7888 and ASTM D1293 methodologies. Unlike benchtop meters, the DPH10 integrates embedded firmware logic for real-time electrode diagnostics, slope calculation, and offset validation during calibration—enabling users to verify sensor health prior to data acquisition.

Key Features

• 3.5-inch high-resolution TFT color display with adjustable brightness and icon-driven navigation for rapid parameter selection and status visualization
• Three-tier pH resolution (0.1 / 0.01 / 0.001 pH) selectable per application requirement; ideal for high-precision QC in regulated environments
• Automatic 1–3 point calibration with built-in buffer recognition (pH 4.00, 6.86, 9.18); calibration report includes slope (%), offset (mV), and date/time stamp
• Integrated rechargeable lithium-ion battery (DH10-LI01) supporting >20 hours of continuous operation; Type-C charging interface complies with IEC 62368-1 and EU RoHS/REACH directives
• IP57-rated enclosure: dust-protected and submersible up to 1 meter for 30 minutes—validated per IEC 60529 standards for industrial field use
• Intelligent power management with auto-sleep, low-battery warning, and non-volatile memory retention during power loss
• Real-time data locking function with hold-and-freeze capability for unstable samples or turbulent sampling conditions

Sample Compatibility & Compliance

The DPH10 is compatible with standard BNC-input combination pH electrodes (e.g., included D201T-H gel-filled, double-junction sensor) and supports both aqueous and semi-aqueous matrices—including buffers, beverages, soil extracts, cooling tower water, and bioprocess broths. Electrode compatibility extends to optional refillable and low-ionic-strength probes for specialized applications. All measurement protocols align with GLP documentation requirements: each stored record contains timestamp, calibrated slope/offset, ambient temperature, and operator ID (if configured via external software). The device meets CE marking requirements under the EU Electromagnetic Compatibility Directive 2014/30/EU and Low Voltage Directive 2014/35/EU. While not FDA 21 CFR Part 11–certified out-of-the-box, audit trails generated via exported CSV files support retrospective validation in GMP-compliant workflows.

Software & Data Management

The DPH10 stores up to 3000 measurement sets locally, each containing pH/ORP value, temperature reading, calibration metadata, and UTC timestamp. Data export is supported via USB connection using DLAB’s free PC utility (compatible with Windows 10/11), which enables batch export to CSV or Excel formats with column headers aligned to ISO/IEC 17025 reporting templates. The software supports user-defined report generation, statistical summary (mean, SD, min/max), and trend plotting. No cloud connectivity or proprietary drivers are required—ensuring IT security compliance in air-gapped facilities. Firmware updates are delivered as signed binary packages via DLAB’s secure download portal, with version rollback capability for validation continuity.

Applications

• Environmental monitoring: Surface water, groundwater, and effluent pH profiling per EPA Method 150.1 and ISO 10523
• Food & beverage QA: Batch verification of acidified products, dairy processing streams, and juice stability testing
• Education: Undergraduate electrochemistry labs requiring Nernst equation validation and calibration curve construction
• Pharmaceutical water systems: USP purified water and WFI conductivity-pH correlation checks (when paired with certified electrodes)
• Aquaculture and hydroponics: Daily nutrient solution pH tracking with automated logging intervals
• Field service maintenance: On-site verification of electrode performance before and after cleaning/regeneration

FAQ

What electrode types are compatible with the DPH10?

The DPH10 accepts any standard BNC-output pH or ORP electrode. The included D201T-H is a maintenance-free, gel-electrolyte combination electrode optimized for general-purpose use. For high-accuracy applications, DLAB recommends the D202T-L (refillable KCl) or D203T-P (low-temperature probe).
Does the DPH10 support GLP-compliant data integrity?

Yes—each measurement record includes immutable metadata (time, calibration status, temperature), and exported CSV files retain full traceability. Audit-ready reports can be generated without third-party software.
How is temperature compensation implemented?

The DPH10 performs automatic temperature compensation using either the integrated ATC sensor or a user-connected external probe (via auxiliary port on select configurations), applying the Nernstian correction factor per ISO 3696 and DIN 19265.
Is the Type-C charging interface compatible with standard power banks?

Yes—any USB PD or BC1.2-compliant power source delivering 5 V / 500 mA or higher will charge the internal battery. Charging time is approximately 3.5 hours from 0% to 100%.
Can the DPH10 be used for non-aqueous samples?

It is not recommended for pure organic solvents (e.g., ethanol, acetone) due to junction potential instability. For mixed aqueous-organic solutions (>80% water), use a double-junction electrode and validate calibration in matrix-matched standards.