Funke Gerber LactoFlash Dairy Analyzer

Overview

The Funke Gerber LactoFlash Dairy Analyzer is a benchtop, fully automated near-infrared (NIR) transmission spectrophotometer engineered for rapid, standardized quantification of key compositional parameters in raw and processed bovine milk. Based on the principle of multi-wavelength NIR absorbance measurement across the 1100–2500 nm spectral region, the instrument applies chemometric calibration models validated against reference methods (e.g., ISO 9622, IDF 141, AOAC 991.20) to determine fat and non-fat solids (NFS) concentrations in real time. Designed for routine operation in dairy laboratories, quality control departments, and milk collection centers, the LactoFlash delivers traceable, reproducible results without reagent consumption or solvent waste—aligning with modern food safety and sustainability requirements.

Key Features

• Fully automated sample handling with integrated peristaltic pumping system; pump head replacement requires no tools and takes <30 seconds
• Two-point calibration protocol with audible and visual prompts, supporting daily verification using certified reference standards (e.g., Gerber Standard Solutions)
• High-precision optical path optimized for low-turbidity liquid matrixes; includes temperature-stabilized cuvette holder to minimize thermal drift
• Dual-language interface (English/German) with intuitive LCD menu navigation and context-sensitive help
• Onboard data storage retains up to 1,000 sample records, including date/time stamps, operator ID, calibration status, and raw spectral snapshots
• Compliant with electrical safety standard IEC 61010-1 and electromagnetic compatibility directive 2014/30/EU

Sample Compatibility & Compliance

The LactoFlash accepts homogenized, non-frothy milk samples within the viscosity range typical of raw, pasteurized, and standardized bovine milk (1.5–3.5 mPa·s at 20 °C). It is validated for use with skim, whole, and fortified milk, as well as cream up to 40% fat—provided samples are pre-filtered (≤5 µm) to avoid optical interference. The analyzer conforms to international dairy testing standards including ISO 9622:2013 (Milk — Determination of fat, protein and lactose content — Guideline for infrared analyzers), IDF 141:2017, and national implementations such as DIN EN ISO 9622. Its design supports GLP-compliant workflows through audit-trail-capable calibration logging and user-accessible firmware revision history.

Software & Data Management

While the LactoFlash operates autonomously via its embedded firmware, it supports bidirectional data exchange via RS232 and USB interfaces for integration into laboratory information management systems (LIMS). Exported data follows ASTM E1382-compliant ASCII format, containing sample ID, measured values, uncertainty estimates, calibration validity flags, and instrument serial number. Optional Gerber LabLink software enables remote calibration management, trend analysis of long-term precision (e.g., control charting per ISO 80000-1), and automated report generation compliant with FDA 21 CFR Part 11 when deployed with appropriate IT infrastructure and electronic signature protocols.

Applications

• Raw milk intake testing at dairy cooperatives and processing plants
• In-process monitoring during standardization, homogenization, and UHT treatment lines
• Verification of compositional claims on finished products (e.g., “low-fat”, “high-protein” labeling)
• Supplier qualification and contractual compliance auditing
• Research applications requiring high-throughput screening of milk variants (e.g., breed-specific composition studies, feeding trial assessments)

FAQ

What reference standards are required for routine calibration?
Certified Gerber Standard Solutions (e.g., catalog no. 3516, 250 mL) are recommended for two-point calibration. These are traceable to NIST SRM 1549a (Whole Milk Powder) and issued with CoA specifying expanded uncertainty (k=2).

Can the LactoFlash analyze goat or sheep milk?
Yes—provided species-specific calibration models are developed and validated per ISO 17025 requirements. Factory-default calibrations apply only to bovine milk; cross-species use requires user-developed PLS regression models.

Is maintenance limited to pump head replacement?
Routine maintenance consists of daily cleaning with Gerber Cleaning Solution (cat. no. 3563), monthly optical path inspection, and annual verification of wavelength accuracy using NIST-traceable filters. No internal optics alignment is required under normal operating conditions.

Does the instrument support network connectivity?
No built-in Ethernet or Wi-Fi; however, RS232-to-Ethernet converters or USB-to-serial gateways may be used for integration into existing plant networks, subject to IT security policy review.