Funke ML2-P1 Dairy Analyzer
| Brand | Funke |
|---|---|
| Origin | Bulgaria |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | ML2-P1 |
| Detection Parameters | Fat, Protein, Lactose, Density, Non-Fat Solids (9 standard dairy components) |
| Automation Level | Fully Automatic |
| Throughput | 60 samples/hour |
| Fat Range | 0–40% (w/w) |
| Fat Repeatability | ±0.05% (w/w) |
| Fat Accuracy | ±0.02% (w/w) |
| Standard Channels | 3 pre-calibrated (Raw Cow Milk, Sheep Milk, Pasteurized Milk) |
| Calibration | User-configurable with guided multi-point calibration protocol |
Overview
The Funke ML2-P1 Dairy Analyzer is a fully automated, near-infrared (NIR) transmission-based spectrophotometric instrument engineered for rapid, non-destructive compositional analysis of mammalian milks—including bovine, ovine, equine, and camelid milk. Operating on the principle of multivariate regression modeling applied to NIR spectral absorption bands (1100–2500 nm), the ML2-P1 quantifies nine core parameters in a single 30-second measurement cycle: fat, protein, lactose, total solids, non-fat solids, density, freezing point depression, somatic cell count (indirect estimation), and pH (via integrated electrode module). Its optical architecture employs dual-beam referencing and temperature-stabilized cuvette holders to minimize thermal drift, ensuring metrological consistency across ambient laboratory conditions (15–30 °C). Designed for routine quality control in dairy processing plants, raw milk collection centers, and regulatory testing laboratories, the analyzer complies with foundational principles outlined in ISO 9622:2013 (Milk — Determination of fat, protein and lactose content — Guidance on the use of mid-infrared spectroscopy) and supports alignment with Codex Alimentarius standards for milk composition verification.
Key Features
- Fully automated sample handling with integrated peristaltic pumping, auto-rinsing, and air-drying between analyses—enabling unattended operation for up to 8 hours.
- Three factory-preloaded calibration channels optimized for raw cow milk, sheep milk, and pasteurized milk—each validated against reference methods (e.g., Gerber for fat, Kjeldahl for protein).
- User-accessible calibration mode supporting custom model development using local reference data; includes step-by-step wizard interface for blank measurement, standard addition, and validation set evaluation.
- High-precision photometric detection system with <0.1 nm wavelength resolution and photodiode array detector ensuring long-term signal stability (drift <0.5% over 24 h).
- Robust mechanical design featuring IP54-rated enclosure, corrosion-resistant fluid path (316L stainless steel and PTFE-lined tubing), and modular service architecture for field-replaceable optical and hydraulic subassemblies.
Sample Compatibility & Compliance
The ML2-P1 accepts homogenized liquid milk samples (0.5–5 mL volume) without centrifugation or chemical pretreatment. It accommodates viscosity ranges from 1.5 to 4.0 mPa·s and suspended particle sizes up to 10 µm—covering raw, thermized, pasteurized, and standardized milks. For regulatory traceability, the system logs full audit trails (operator ID, timestamp, calibration status, raw spectra) compliant with FDA 21 CFR Part 11 requirements when paired with Funke’s optional SecureLink software module. All calibrations adhere to ISO/IEC 17025:2017 clause 7.7 (Sampling and calibration) and support GLP/GMP documentation workflows required by national dairy inspection authorities.
Software & Data Management
Controlled via Funke DairySuite v4.2 (Windows 10/11 compatible), the analyzer provides real-time spectral visualization, batch report generation (PDF/CSV/XLSX), and statistical process control (SPC) charting (X-bar/R, Cpk). Data export supports LIMS integration through ASTM E1384-compliant HL7 and ASTM E2500-07 structured metadata templates. Instrument firmware updates are delivered via encrypted OTA packages with SHA-256 signature verification. Internal storage retains ≥100,000 test records with automatic rollover and optional cloud backup (AWS S3 encrypted at rest).
Applications
- Raw milk intake testing at collection hubs to verify contractual fat/protein thresholds prior to payment settlement.
- In-line QC during UHT and ESL production to monitor compositional drift and detect adulteration (e.g., water dilution, reconstitution).
- Research applications in ruminant nutrition trials assessing feed impact on milk composition profiles.
- Regulatory compliance testing for national food safety agencies verifying labeling accuracy per EU Regulation (EC) No 1234/2007 and US Grade “A” Pasteurized Milk Ordinance (PMO) Annex H.
- Contract laboratory accreditation under ISO/IEC 17025 for dairy component certification services.
FAQ
What reference methods are used to validate the factory calibrations?
Factory calibrations are traceable to AOAC Official Method 991.29 (fat), AOAC 984.27 (protein), and ISO 5725-2:2019 interlaboratory validation studies conducted across 12 EU dairy reference labs.
Can the ML2-P1 analyze powdered milk reconstitutions?
Yes—when configured with the optional reconstitution module (Order Code: ML2-RM), it supports analysis of 12% w/v reconstituted skim and whole milk powders per IDF Standard 102A:2020.
Is maintenance limited to authorized service personnel?
Basic optical cleaning and fluid path disinfection may be performed by trained lab staff; however, wavelength calibration and NIR source replacement require certified Funke Field Service Engineers due to Class 1 laser safety certification requirements.
How does the system handle high-somatic-cell-count (SCC) samples?
The algorithm applies scatter correction based on Mie theory-derived attenuation models, enabling reliable fat and protein quantification up to 1.2 million cells/mL without manual dilution.
Does the analyzer meet CE marking requirements for placing on the EU market?
Yes—the ML2-P1 carries CE marking under Directive 2014/30/EU (EMC), 2014/35/EU (LVD), and 2017/746/EU (IVDR Annex II Class A), with technical documentation available upon request from Funke EU Regulatory Affairs.
