YUFENGRUILIN ST-2Y Dual-Channel Soxhlet Extractor for Fat Analysis
| Brand | YUFENGRUILIN |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Model | ST-2Y |
| Receiving Flask Volume | 250 mL |
| Temperature Range | Ambient to 100 °C |
| Temperature Control Accuracy | ±0.5 °C |
| Channel Count | 2 |
Overview
The YUFENGRUILIN ST-2Y Dual-Channel Soxhlet Extractor is a precision laboratory instrument engineered for quantitative fat determination using the classical Soxhlet extraction principle—a continuous solvent reflux method standardized in numerous international and national analytical protocols. It operates on the principle of cyclic percolation: solid samples are placed in thimbles within extraction chambers, where hot solvent vapor condenses, drips onto the sample, dissolves lipids, and siphons back into the boiling flask upon reaching the siphon arm’s threshold. This thermally driven, closed-loop process ensures exhaustive lipid recovery with minimal operator intervention. Designed for routine quality control and research applications, the ST-2Y delivers reproducible results across diverse matrices including cereals, oilseeds, animal feed, soil, and biological tissues—fully aligned with gravimetric fat quantification workflows required by ISO, AOAC, and national standards such as GB/T 5512, GB/T 6433, and GB/T 14772.
Key Features
- Water-bath heating system ensures uniform thermal distribution and rapid temperature ramp-up (≈10 min to setpoint), eliminating localized overheating and enhancing solvent stability during prolonged extractions.
- Ground-glass joint interfaces eliminate reliance on elastomeric seals—preventing swelling, degradation, or leakage when exposed to chlorinated solvents (e.g., chloroform, dichloromethane) or petroleum ether.
- Digital PID temperature controller with integrated timer enables precise setpoint adjustment (ambient to 100 °C) and programmable extraction duration—critical for method optimization and inter-laboratory comparability.
- Dual independent extraction channels share a common water bath but allow parallel processing of two distinct samples under identical thermal conditions—improving throughput without compromising analytical integrity.
- Modular glassware assembly includes 250 mL receiving flasks, siphon tubes, condensers, and extraction thimbles—all borosilicate 3.3 glass compliant with DIN/ISO 1042 volumetric tolerances.
- Optional valve-equipped configurations support automated solvent recovery (>80% recovery rate), reducing hazardous waste volume and enabling solvent reuse in regulated environments.
Sample Compatibility & Compliance
The ST-2Y accommodates solid and semi-solid matrices with fat content ranging from 0.5% to 60% w/w—including whole grains, ground feedstuffs, dried plant tissues, meat homogenates, and soil sediments. Its design conforms to the mechanical and procedural requirements of multiple standardized methods: GB/T 14772–2008 (food crude fat), GB/T 6433–2006 (feed crude fat), ISO 3947:1994 (starch total fat), SN/T 0803.1–1999 (import/export oilseeds), and QB/T 2718–2018 (leather dichloromethane extractables). While not intrinsically GLP- or 21 CFR Part 11–compliant (as it lacks electronic audit trails), its operational consistency supports data integrity in ISO/IEC 17025-accredited laboratories when paired with documented SOPs and manual logbook entries.
Software & Data Management
The ST-2Y operates as a standalone hardware platform with no embedded firmware or digital connectivity. Temperature and timing parameters are managed via front-panel digital display and push-button controls. All measurement data—including extraction duration, setpoint temperature, and final gravimetric mass differentials—must be recorded manually or integrated into external LIMS systems via lab notebook transfer. For regulatory traceability, users are advised to maintain contemporaneous records of flask tare weights, post-extraction drying conditions (e.g., 105 °C for 1 h), and ambient humidity logs per ASTM D2156 or AOAC 920.39 guidelines.
Applications
- Food & Agriculture: Crude fat quantification in flour, rice bran, soybean meal, and edible oils per GB/T 5512–1985 and AOAC Official Method 920.39.
- Animal Nutrition: Feed formulation validation and quality assurance testing for poultry, aquaculture, and livestock rations.
- Environmental Analysis: Lipid-bound contaminant extraction (e.g., PAHs, PCBs) from sediment cores prior to GC-MS analysis.
- Pharmaceutical & Cosmetic R&D: Excipient screening, lipid nanoparticle yield assessment, and botanical oil standardization.
- Academic Research: Teaching laboratories for fundamental organic extraction techniques and method validation studies.
FAQ
What solvents are compatible with the ST-2Y extractor?
Commonly used solvents include petroleum ether (bp 40–60 °C), diethyl ether, chloroform, and dichloromethane—provided their boiling points fall within the 30–100 °C operating range and compatibility with borosilicate glass is confirmed.
Is the ST-2Y suitable for moisture-sensitive samples?
Yes—when operated under inert atmosphere (N₂ purge via optional condenser inlet port) and with anhydrous solvents, it supports extraction of hydrolysis-prone lipids such as triglycerides and phospholipids.
Can I upgrade from 2-channel to 4-channel configuration?
No—the ST-2Y is a fixed dual-channel unit; ST-4Y and ST-6Y models are mechanically distinct platforms with larger baths and reinforced support frames.
Does the instrument include extraction thimbles and desiccators?
Standard delivery includes glassware only (flasks, condensers, siphon tubes); cellulose thimbles, drying ovens, and analytical balances must be sourced separately per user-defined SOPs.
How often should the water bath be refilled or replaced?
Distilled water should be replenished before each batch and fully replaced weekly—or immediately after visible contamination—to prevent mineral scaling and thermal drift.
