Lovibond PFXi 880F Precision Automatic Colorimeter

Overview

The Lovibond® PFXi 880F Precision Automatic Colorimeter is an advanced photometric instrument engineered for objective, repeatable color measurement across liquid, transparent, and translucent samples in quality control, research, and regulatory environments. Unlike traditional visual color comparison methods—such as the legacy Lovibond® Model F—which rely on human observer interpretation of standardized glass filters, the PFXi 880F employs a fixed-wavelength tristimulus filter photometric system aligned to the CIE 1931 2° standard observer. It quantifies color by measuring spectral transmittance at discrete bands corresponding to red, yellow, blue, and neutral (RYBN) components, then computes results against internationally recognized scales including APHA/Pt-Co, Gardner, Saybolt, ASTM D1209, D5386, and D6166, as well as CIE L*a*b* and XYZ coordinates. This eliminates inter-observer variability, ambient lighting dependency, and subjective bias—critical requirements for laboratories operating under GLP, GMP, or ISO/IEC 17025 frameworks.

Key Features

• High-resolution 7-inch capacitive touchscreen interface with intuitive icon-driven navigation and multilingual OS support (English, German, French, Spanish, Chinese, Japanese)
• Integrated tungsten-halogen light source with thermal stabilization and spectral consistency compliant with IEC 61000-4-11 for long-term photometric stability
• Pre-loaded library of over 40 industry-standard color scales—including pharmacopeial (USP ), petrochemical (ASTM D1209), food-grade (ISO 4630), and paint/coating (ISO 2764) specifications
• RCMSi (Routine Calibration Management System integrated) validation-ready architecture with automated calibration verification logs, timestamped user authentication, and full audit trail capability
• Dual connectivity: native Ethernet (10/100 Mbps) for networked lab integration and USB 2.0 host/device mode for direct PC synchronization or peripheral device attachment
• Comprehensive accessory suite: includes certified RYBN reference filter, 10 mm and 52.5 mm round sample cells, RCMSi initial verification kit, and multi-region power adapters (UK, EU, US)

Sample Compatibility & Compliance

The PFXi 880F accommodates a wide range of sample formats—including aqueous solutions, oils, solvents, syrups, and clarified beverages—using interchangeable pathlength cells (10 mm to 50 mm). Its optical design minimizes stray light and scattering artifacts through precision aperture alignment and baffled beam geometry, ensuring high fidelity for low-absorbance measurements (e.g., APHA <100). The instrument meets CE and UKCA marking requirements and conforms to electromagnetic compatibility (EMC) and safety standards per EN 61326-1 and EN 61010-1. When paired with optional compliance software licenses, it supports FDA 21 CFR Part 11 requirements—including electronic signatures, role-based access control, and immutable audit trails—making it suitable for regulated pharmaceutical, cosmetic, and food manufacturing QC labs.

Software & Data Management

Data capture, reporting, and traceability are managed via the embedded firmware and optional PC-based ColorSoft™ Pro software. All measurements are automatically timestamped and tagged with operator ID, method name, cell pathlength, and calibration status. Export formats include CSV, PDF, and XML for LIMS integration. The system supports method templates with configurable pass/fail limits, statistical process control (SPC) charting, and trend analysis across batches or shifts. Raw absorbance values at each RYBN band are stored alongside computed scale values, enabling retrospective re-evaluation without re-measurement. Network deployment allows centralized configuration management and remote firmware updates via secure HTTPS.

Applications

• Pharmaceutical water testing (Purified Water, WFI) per USP and EP 2.2.59
• Petrochemical product grading (kerosene, diesel, lubricants) per ASTM D1500 and D6045
• Food & beverage quality assurance (sugar syrups, edible oils, vinegar, beer) per AOAC and ISO methods
• Chemical manufacturing QC (acids, alkalis, dyes, polymers) requiring APHA, Gardner, or Hazen-scale conformity
• Environmental monitoring of treated effluents and potable water clarity indices
• Academic and industrial R&D where reproducible color quantification under variable observer conditions is essential

FAQ

How does the PFXi 880F differ from visual Lovibond comparators like the Model F?

The PFXi 880F replaces subjective visual matching with objective photometric detection. It uses calibrated filters and a stable tungsten-halogen source to generate quantitative RYBN values—eliminating observer fatigue, lighting variation, and inter-operator discrepancies inherent in manual comparison.
Is the instrument suitable for ISO/IEC 17025-accredited laboratories?

Yes. With documented factory calibration, RCMSi verification records, and optional audit-trail software, the PFXi 880F supports full metrological traceability to NPL (UK) and NIST (US) standards, fulfilling clause 6.4.10 and 7.7 requirements for equipment verification.
Can the PFXi 880F measure non-Lovibond color scales such as CIE L*a*b*?

Yes. It computes CIE L*a*b*, CIE XYZ, and ΔE*ab directly from its tristimulus RYBN data using built-in CIE 1931 2° observer transformation matrices—no external conversion required.
What maintenance is required to sustain accuracy over time?

Annual verification using the RCMSi kit is recommended. Lamp replacement (rated for ≥2,000 hours) and routine cleaning of optical windows and cell holders per manufacturer guidelines ensure long-term photometric integrity.
Does the PFXi 880F support LIMS integration?

Yes. Through Ethernet or USB-serial emulation, it outputs structured ASCII data compatible with major LIMS platforms. ColorSoft™ Pro also provides ODBC-compliant database export for custom ERP linkage.