NIUMAG PQ001SFC Solid Fat Content Analyzer
| Brand | NIUMAG |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | PQ001SFC |
| Pricing | Available Upon Request |
| Magnet Type | Permanent Magnet |
| Magnetic Field Strength | 0.5 ± 0.08 T |
| Larmor Frequency | 21.3 MHz |
| Probe Coil Diameter | 10 mm |
Overview
The NIUMAG PQ001SFC Solid Fat Content (SFC) Analyzer is a benchtop low-field nuclear magnetic resonance (LF-NMR) instrument engineered for rapid, non-destructive, and quantitative determination of solid fat content in lipid-based food and industrial materials. Operating on the principle of proton spin relaxation time measurement—specifically the differential transverse relaxation behavior (T2) between solid and liquid triglyceride phases—the PQ001SFC delivers precise SFC profiles across temperature ramps without chemical solvents, sample derivatization, or physical disruption. Its permanent magnet system (0.5 ± 0.08 T, 21.3 MHz Larmor frequency) ensures field stability and long-term operational consistency, while the 10 mm diameter RF probe coil enables optimal signal-to-noise ratio for small-volume, heterogeneous samples such as cocoa butter, margarine, butter, lard, and hydrogenated vegetable oils.
Key Features
- Non-invasive analysis: No solvent extraction, no sample grinding or melting—preserves native microstructure and eliminates operator exposure to hazardous reagents.
- High reproducibility: Coefficient of variation (CV) < 1.5% for repeated measurements under standardized temperature protocols (e.g., AOCS Cd 16b-93).
- Benchtop footprint: Compact design (W × D × H ≈ 450 × 380 × 320 mm) suitable for QC laboratories with space constraints.
- Integrated temperature control: Equipped with a Peltier-based sample chamber supporting programmable cooling/heating from –20 °C to +80 °C at ±0.1 °C accuracy.
- Robust architecture: Sealed permanent magnet with passive thermal stabilization; no cryogen consumption or external chiller required.
- Intuitive operation: Touchscreen interface with preloaded SFC analysis workflows compliant with AOCS, ISO 8587, and IDF 141 standards.
Sample Compatibility & Compliance
The PQ001SFC accommodates a broad range of semi-solid and plastic fat matrices—including but not limited to cocoa butter equivalents, palm oil fractions, dairy butter, shortening, and confectionery fats—in standard 10 mm NMR tubes (sample volume: 0.5–1.5 mL). Its measurement methodology aligns with internationally recognized reference methods: AOCS Cd 16b-93 (determination of solid fat index by NMR), ISO 8587:2022 (sensory analysis — methodology — general guidance), and IDF 141:2018 (milk fat — determination of solid fat content by pulsed NMR). Data integrity meets GLP and GMP documentation requirements, with optional audit trail logging and user access controls compatible with FDA 21 CFR Part 11 readiness when deployed with validated software configurations.
Software & Data Management
The instrument is controlled via NIUMAG’s proprietary SFC Analysis Suite v3.2, a Windows-based application supporting full temperature-ramped SFC curve acquisition (e.g., 0–40 °C at 1 °C intervals), automatic T2 decay fitting using multi-exponential inversion (NNLS algorithm), and direct export of SFC vs. temperature tables in CSV, Excel, and PDF formats. Raw FID data is stored in vendor-neutral JCAMP-DX format. Software features include method validation templates, calibration curve management, batch processing, electronic signature support, and integration with LIMS via ODBC drivers. All processing parameters—including pulse sequence timing, number of scans, and relaxation delay—are fully configurable and traceable per analysis.
Applications
- Quality control of edible fats: Monitoring crystallization kinetics during tempering of chocolate and confectionery coatings.
- Formulation development: Evaluating fat substitution effects (e.g., interesterified oils, plant-based alternatives) on solid fat profile and mouthfeel.
- Regulatory compliance testing: Verifying labeling claims for “zero trans fat” or “low saturated fat” products per EU Regulation (EC) No 1924/2006 and US FDA nutrition labeling guidelines.
- Research in lipid polymorphism: Correlating SFC curves with XRD or DSC data to study β/β′/α crystal phase transitions.
- Process optimization: Supporting continuous fractionation and dry fractionation process validation in edible oil refineries.
FAQ
What temperature range is supported for SFC measurement?
The PQ001SFC supports programmable temperature control from –20 °C to +80 °C, with ramp resolution of 0.1 °C and isothermal stability better than ±0.1 °C over 30-minute acquisitions.
Does the instrument require liquid helium or nitrogen?
No. It uses a maintenance-free permanent magnet system and requires no cryogens or external cooling utilities.
Can it measure solid fat content in emulsified systems like spreads or cream cheese?
Yes—provided the aqueous phase does not exceed ~30% w/w and the fat globule size remains below 50 µm; method validation is recommended for each matrix.
Is the software compliant with 21 CFR Part 11 for regulated environments?
The base software supports electronic signatures and audit trails; full 21 CFR Part 11 compliance requires documented installation qualification (IQ), operational qualification (OQ), and configuration management per site-specific validation protocols.
How often does the system require recalibration?
Magnet drift is negligible due to passive thermal stabilization; routine performance verification using a certified SFC reference standard (e.g., NIST-traceable cocoa butter) is recommended every 6 months or per internal QA schedule.
