HX-MI1885 Mechanical Impurities Tester by Spectra Invent

Overview

The HX-MI1885 Mechanical Impurities Tester is a precision laboratory instrument engineered for the quantitative determination of insoluble particulate matter—commonly referred to as mechanical impurities—in petroleum products. It operates in strict accordance with the gravimetric principle defined in GB/T 511–2010 (equivalent to ASTM D4294–22 for elemental sulfur screening context and aligned with ISO 3735:2000 for petroleum product residue analysis). The system facilitates standardized filtration, solvent washing, drying, and high-accuracy weighing of retained solids on pre-weighed filter media, enabling trace-level detection down to 0.001% (w/w) under controlled environmental conditions. Designed for routine QC laboratories in refineries, lubricant manufacturing facilities, and third-party testing centers, the HX-MI1885 delivers reproducible results essential for compliance with national and international fuel specifications, including those governing diesel, jet fuel, crankcase oils, and industrial hydraulic fluids.

Key Features

• Integrated dual-stage vacuum filtration assembly with adjustable pressure regulation (0–80 kPa) for consistent flow rates across varying sample viscosities
• Thermostatically controlled hot-air drying oven (ambient to 110 °C ±1 °C) with forced convection and digital PID temperature stabilization
• Compliant glassware set: borosilicate funnels, extraction thimbles, and weighing dishes meeting ASTM E202–21 dimensional and thermal stability requirements
• Digital analytical balance interface (RS-232/USB) supporting automatic data capture of pre- and post-filtration masses
• Modular design permitting seamless integration with GLP-compliant lab information management systems (LIMS)
• CE-marked electrical architecture with overtemperature protection, ground-fault circuit interruption (GFCI), and IP20-rated enclosure

Sample Compatibility & Compliance

The HX-MI1885 accommodates a broad range of petroleum-based matrices, including but not limited to: gasoline, kerosene, diesel fuel (EN 590, ASTM D975), aviation turbine fuels (Jet A-1, ASTM D1655), engine oils (API SP, ACEA C6), gear oils (SAE J2360), and additive concentrates. Sample volumes are configurable from 20 mL to 100 mL depending on expected contamination load and matrix volatility. All procedural steps align with GB/T 511–2010, which references ISO 3735:2000 methodology for mechanical impurity quantification in crude oil and petroleum products. Instrument validation documentation supports audit readiness for ISO/IEC 17025:2017 accredited laboratories and satisfies traceability requirements under China’s CNAS-CL01 and U.S. FDA 21 CFR Part 11 when paired with validated software modules.

Software & Data Management

The HX-MI1885 operates with optional SpectraTest™ v3.2 software—a Windows-based application compliant with 21 CFR Part 11 Annex 11 requirements. It provides electronic signature capability, role-based user access control (administrator/operator/auditor), full audit trail logging (including timestamped mass entries, method parameters, operator ID, and instrument events), and automated calculation of mechanical impurity content per Equation 1 in GB/T 511. Raw data exports are available in CSV, PDF, and XML formats compatible with LIMS platforms such as LabWare LIMS and Thermo Fisher SampleManager. All calibration records, maintenance logs, and performance verification reports are stored with immutable metadata and SHA-256 hash integrity verification.

Applications

• Quality assurance of base oils prior to additive blending
• Monitoring filter efficiency and coalescer performance in fuel polishing systems
• Investigating root causes of wear debris in used engine oil analysis programs
• Verification of cleaning efficacy during tank bottom sludge removal operations
• Supporting technical service investigations for field-reported injector fouling or hydraulic valve stiction
• Regulatory submission testing for fuel certification under China’s GB 17930–2016 and EU EN 590:2022

FAQ

What standards does the HX-MI1885 officially support?

It is fully configured to execute GB/T 511–2010 and technically compatible with ISO 3735:2000 and ASTM D4294–22 for related particulate assessment workflows.
Can the system be used for biodiesel or bio-blended fuels?

Yes—provided the solvent selection (e.g., toluene/methanol mixtures per ASTM D6751 Annex A1) is validated for complete dissolution of ester-phase components prior to filtration.
Is the instrument suitable for ISO 17025 accreditation?

When operated with documented SOPs, calibrated balances traceable to NIM (China) or NIST (USA), and maintained per manufacturer-recommended intervals, it meets all technical requirements for inclusion in accredited test scopes.
Does the HX-MI1885 include a built-in balance?

No—it interfaces with external analytical balances (0.0001 g readability recommended) via serial or USB connection; balance selection must comply with OIML R76-1 Class I or II metrological classification.
What maintenance intervals are recommended?

Vacuum pump oil replacement every 500 operating hours; oven calibration verification quarterly; filter manifold inspection before each batch; full system performance qualification annually or after major component replacement.