Changji Instruments SYD-511B Mechanical Impurities Tester

Overview

The Changji Instruments SYD-511B Mechanical Impurities Tester is a precision benchtop instrument engineered for the quantitative determination of mechanically insoluble particulate matter in petroleum products and lubricant additives, strictly in accordance with the methodology defined in GB/T 511—2010, “Test Method for Mechanical Impurities in Petroleum Products and Additives (Gravimetric Method).” This standard aligns closely with internationally recognized practices for solid contaminant quantification in hydrocarbon-based fluids, including ASTM D4294 (for elemental analysis context), ISO 12185 (crude oil density), and USP particulate matter guidance where applicable. The instrument operates on a gravimetric principle: a representative sample is dissolved in a specified solvent (e.g., toluene or xylene), filtered through a pre-weighed glass-fiber filter under controlled vacuum, dried, and re-weighed to determine the mass fraction of non-volatile, insoluble residue. Its design emphasizes thermal stability, procedural reproducibility, and operator safety during solvent handling.

Key Features

• Integrated thermostatically controlled water bath (room temperature to 90 °C) with ±1 °C accuracy, enabling precise solvent heating and sample dissolution per GB/T 511 requirements.
• Dedicated temperature-regulated funnel assembly with ±2 °C control, minimizing thermal shock during filtration and preventing premature solvent crystallization or wax precipitation in heavy oils.
• Compact desktop configuration with modular components: stainless-steel water bath tank, microprocessor-based temperature controller, vacuum-assisted filtration system (including vacuum pump, filter flask, and glass funnel), and motor-driven magnetic stirrer for homogeneous sample dispersion.
• All-glass filtration train compliant with GB/T 511 specifications—including borosilicate glass漏斗 (funnel), filter flask, graduated cylinder, mercury thermometer (calibrated to ±0.2 °C), and supporting fixtures (rod stands, clamps, funnel supports).
• LED digital temperature display for both bath and funnel zones, facilitating real-time monitoring and GLP-compliant documentation of thermal conditions during each test cycle.

Sample Compatibility & Compliance

The SYD-511B accommodates a broad spectrum of petroleum-derived samples, including light distillates (e.g., gasoline, kerosene), middle distillates (diesel fuel, jet fuel), residual fuels (bunker C), base oils, finished engine oils, hydraulic fluids, and additive concentrates. It supports solvent systems specified in GB/T 511—primarily toluene, xylene, or 1:1 mixtures—and is compatible with alternate solvents validated under internal SOPs (e.g., chlorinated solvents for high-wax-content samples). All wetted parts are chemically resistant to common hydrocarbon solvents. The instrument meets essential requirements for laboratory quality assurance: its thermal control architecture supports audit-ready traceability, and its mechanical design facilitates cleaning and verification per ISO/IEC 17025 calibration protocols. While not certified to IEC 61000 or UL standards out-of-box, it is routinely deployed in ISO 9001- and CNAS-accredited laboratories performing routine QC testing on incoming feedstocks and finished lubricants.

Software & Data Management

The SYD-511B is a hardware-only, manually operated system with no embedded firmware or proprietary software. Temperature readings are displayed locally via LED interface; all data recording—including initial/final filter weights, solvent volumes, ambient lab temperature, and operator ID—is performed manually in paper-based or LIMS-integrated electronic lab notebooks (ELN). This analog architecture ensures full compliance with environments requiring minimal digital footprint, such as GMP-regulated facilities where computerized system validation (CSV) is cost-prohibitive. Users may integrate the instrument into broader QA workflows by pairing it with certified analytical balances (e.g., METTLER TOLEDO XP series) and documenting procedures per FDA 21 CFR Part 11–aligned SOPs that include signature fields, revision tracking, and raw data retention policies.

Applications

• Quality control of crude oil and refined products at refineries and terminal labs.
• Verification of mechanical cleanliness in new and used engine oils prior to OEM specification release.
• Monitoring filterability and sludge formation tendency in turbine and transformer oils.
• Supporting root-cause analysis of equipment wear debris in field-service laboratories.
• Educational use in petroleum engineering curricula for teaching standardized gravimetric methods.

FAQ

Does the SYD-511B comply with ASTM D2276 or ISO 4020 for particulate contamination in aviation fuels?
No—it is designed exclusively for GB/T 511 gravimetric analysis. ASTM D2276 uses membrane filtration with optical particle counting; ISO 4020 specifies different pore sizes and reporting units.
Can the instrument be used for water-based emulsions or biofuels?
Not without method validation. GB/T 511 assumes hydrocarbon solubility; aqueous or polar matrices require alternative solvents and recovery studies.
Is calibration certificate included with shipment?
A factory calibration report for temperature sensors is provided; users must perform periodic verification using NIST-traceable thermometers per their internal QA schedule.
What maintenance is required for long-term reliability?
Regular descaling of the water bath with dilute acetic acid, inspection of vacuum tubing for cracks, and annual verification of temperature sensor drift.
Are replacement glass components available as spare parts?
Yes—standardized GB/T 511-compliant funnels, filter flasks, and graduated cylinders are stocked and shipped globally under Changji’s spare parts program (P/N prefix: SYD-511B-GLS).