Laboratory Instruments & Portable pH Meters
Connect your lab and process with the Liquiline CML18 multiparameter handheld and Memosens Lab sensors.
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Fundamental 
Laboratory Instruments & Portable pH Meters
Laboratory and portable pH instruments provide high-accuracy measurement for grab samples, field surveys, commissioning, and verification of online analyzers. Handheld and bench systems typically support pH, temperature, and often additional parameters such as ORP or conductivity depending on configuration. These instruments serve as the reference layer for confirming process measurements and diagnosing sampling or sensor issues.
The primary value is measurement confidence across the full lifecycle - design validation, startup, routine checks, and troubleshooting. Portable pH meters enable rapid confirmation at multiple points without installing permanent hardware, while lab meters support controlled conditions for calibration, method development, and quality documentation. This reduces uncertainty when reconciling online readings with lab results or identifying sample handling effects.
Modern portable systems emphasize ruggedness, stable temperature compensation, and electrode designs suited to challenging matrices. Features commonly include guided calibration workflows, automatic buffer recognition, stability criteria, and data logging with time stamps for traceability. For fieldwork, ingress protection, impact resistance, and quick-connect electrode systems can materially improve uptime and measurement repeatability.
Bench instruments typically add higher resolution, expanded connectivity, and support for standardized reporting practices. Interfaces may provide GLP-style calibration records, user management, and exportable datasets for audits and batch documentation. Electrode selection - junction type, glass formulation, refillable vs. gel, and maintenance routines - remains central to achieving low drift and fast response across diverse samples.
Typical applications span water and wastewater checks, neutralization verification, cooling water monitoring, chemical makeup confirmation, food and beverage utilities, and environmental sampling campaigns. Portable instruments are often used to validate online sensor performance, identify sampling location issues, and confirm buffer performance during calibration. A disciplined approach to electrode care and standardized calibration steps turns lab and portable pH measurement into a reliable benchmark rather than a source of variability.
Instrumentation and Controls., an exclusive authorized representative of sales and service for Endress+Hauser.
