Lovibond ICx Precision Platinum-Cobalt (Pt-Co) Colorimeter

Overview

The Lovibond ICx Precision Platinum-Cobalt (Pt-Co) Colorimeter is an advanced benchtop transmittance spectrophotometer engineered for high-accuracy color assessment of transparent, low-color liquids in quality control and R&D laboratories. It operates on the principle of spectral transmittance measurement across the visible range (typically 380–780 nm), using a stabilized halogen light source and precision glass optics to quantify absorbance at defined wavelengths. The instrument calculates color values in accordance with internationally recognized standards—including ASTM D1209 (Platinum-Cobalt Scale for Water Clarity), ASTM D5386 (Color of Liquids Using Tristimulus Colorimetry), ISO 6271 (Water Quality — Determination of Color), and ASTM E313 (Yellowness Index)—ensuring traceability and regulatory alignment across pharmaceutical, chemical, petrochemical, food & beverage, and water treatment applications. Its core design addresses a critical industry need: reliable quantification of near-colorless samples where conventional colorimeters exhibit insufficient resolution or drift below Pt-Co 5.

Key Features

• High-precision optical architecture optimized for low-Pt-Co measurements (0–20), delivering repeatability of ±0.5 Pt-Co units—validated against ISO/IEC 17025-accredited reference standards.
• Sealed, laser-etched sample chamber with chemically resistant aluminum housing and fully isolated optical train to prevent ingress of solvents, acids, or caustic reagents.
• Flexible pathlength compatibility (0.1–152.4 mm) supporting standard Lovibond W600/B/100 cuvettes (optical glass or borosilicate) and optional PTFE-lined adapters for aggressive media.
• One-touch automatic baseline calibration and real-time diagnostics to ensure measurement integrity before each analysis.
• Intuitive 4.3-inch full-color touchscreen interface with multilingual support (9 languages), context-sensitive help, and guided method execution.
• User-replaceable 12 V / 20 W halogen lamp with documented photometric stability and lifetime specifications per IEC 61000-4-11.
• Robust data management: onboard storage exceeding 100,000 measurements with timestamp, operator ID, method ID, and metadata tagging.

Sample Compatibility & Compliance

The ICx accommodates a wide range of liquid samples—from purified water and pharmaceutical solvents to edible oils, glycols, and industrial process streams—without dilution or filtration in most cases. Its sealed chamber and corrosion-resistant construction meet stringent laboratory safety requirements for handling Class 3–4 hazardous substances under CLP/GHS guidelines. All certified reference materials (CRMs), including Lovibond’s OIML-traceable Pt-Co standards (e.g., Pt-Co 5 ±0.2), are prepared gravimetrically using calibrated analytical balances and verified on PQ/OQ-qualified instrumentation. The system supports audit-ready workflows compliant with FDA 21 CFR Part 11 (when used with validated software configurations), GLP, and GMP environments requiring electronic records, user access controls, and change history logging.

Software & Data Management

Data export is supported via USB host (to thermal printers or flash drives) and RS232 serial connection for integration into LIMS or MES platforms. Raw spectral data, calculated color indices, and instrument status logs are stored in CSV and XML formats compatible with statistical process control (SPC) tools. Firmware updates are delivered through Lovibond’s secure portal and include version-controlled release notes, cybersecurity patches (aligned with IEC 62443-4-2), and validation documentation for regulated users. Optional PC software provides trend analysis, report generation (PDF/Excel), and comparative batch evaluation against specification limits defined per USP , EP 2.2.43, or internal QC protocols.

Applications

• Pharmaceutical manufacturing: Verification of solvent clarity (e.g., ethanol, isopropanol) per USP and EP monographs.
• Chemical synthesis: Monitoring oxidation state and degradation products in intermediates and final APIs.
• Petrochemical refining: Assessing hydrocarbon purity and catalyst leaching effects in naphtha, kerosene, and lubricant base stocks.
• Food & beverage: Quantifying yellowness index in edible oils, syrups, and clarified juices to ensure consistency and shelf-life prediction.
• Drinking water and wastewater treatment: Compliance testing for color removal efficiency in coagulation/flocculation and activated carbon processes.
• Academic research: Method development for novel colorimetric assays requiring sub-unit Pt-Co resolution and long-term instrument stability.

FAQ

What standards does the ICx comply with for Pt-Co color measurement?
ASTM D1209, ASTM D5386, ISO 6271, and ASTM E313 are fully implemented in firmware; measurement algorithms are independently verified against NIST-traceable reference materials.
Can the ICx measure non-Pt-Co color scales such as Gardner or Saybolt?
No—the ICx is purpose-built for Pt-Co/Hazen/APHA, CIEL*a*b*, and Yellowness Index. Gardner and Saybolt require dedicated instruments with distinct optical geometries and calibration protocols.
Is the halogen lamp field-replaceable without recalibration?
Yes—lamp replacement is a user-serviceable procedure; post-replacement verification is performed automatically during baseline calibration.
How is data integrity ensured in regulated environments?
Through configurable user roles, electronic signatures, audit trails (including parameter changes and calibration events), and encrypted data export—all supporting ALCOA+ principles and 21 CFR Part 11 compliance when deployed with validated software extensions.
What maintenance is required beyond lamp replacement?
Routine cleaning of the sample chamber window and cuvette contact surfaces with lint-free wipes and isopropyl alcohol; annual performance verification using Lovibond-certified standards is recommended for ISO/IEC 17025-aligned labs.