PerkinElmer OilPrep 4 Oil Dilution System

Overview

The PerkinElmer OilPrep 4 Oil Dilution System is an automated, precision-engineered liquid handling platform designed specifically for the preparation of lubricating oil samples prior to elemental analysis by Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) and particle characterization via Single Particle Optical Sizing (SPOS). Operating on a validated dilution protocol using kerosene as the diluent, the system ensures consistent, traceable sample preparation that meets the stringent reproducibility requirements of wear metal monitoring and particulate contamination assessment in condition-based maintenance programs. Its architecture integrates gravimetric and volumetric fluid control principles with ultrasonic liquid level sensing—enabling accurate, operator-independent dilution across variable sample volumes without manual intervention or calibration drift.

Key Features

• Quad-channel Varispan® pipetting arm with independent Z-axis control, enabling simultaneous aspiration from up to four vials or test tubes—reducing cycle time by up to 75% compared to single-channel systems.
• Ultrasonic liquid level detection technology automatically identifies meniscus position in source and destination vessels, compensating for viscosity variations and surface tension effects inherent in used engine oils, gear oils, and hydraulic fluids.
• Disposable, low-retention pipette tips eliminate carryover risk and cross-contamination between samples; no tip washing or drying steps required—supporting GLP-compliant workflows.
• Intuitive touchscreen interface with preloaded, editable pipetting templates—including ASTM D5185 (ICP analysis of used lubricants) and ISO 4406 (particle count reporting)–aligned protocols.
• Modular design supports seamless integration with PerkinElmer’s OilExpress™ Condition Monitoring Platform, enabling co-located FT-IR spectroscopy and automated dilution on a shared hardware chassis and unified software environment.

Sample Compatibility & Compliance

The OilPrep 4 accommodates a broad range of petroleum-based and synthetic lubricants—including engine oils (SAE 0W–60), turbine oils, compressor oils, and greases (after solvent extraction). It accepts standard 12–16 mm diameter glass or polypropylene sample vials, 30 mL scintillation vials, and 100 mL HDPE bottles. The system complies with key regulatory and quality frameworks: its audit trail functionality satisfies FDA 21 CFR Part 11 requirements for electronic records and signatures; data integrity features align with ISO/IEC 17025:2017 clause 7.7 (result reporting); and dilution accuracy has been verified per ASTM D7414–22 (Standard Practice for Verification of Automated Liquid Handling Systems in Petroleum Testing).

Software & Data Management

Controlled via PerkinElmer’s proprietary OilPrep Software v3.x, the system delivers full traceability through timestamped, user-identifiable log files containing pipette volume, dilution factor, tip lot number, and error codes. All method parameters are stored in encrypted SQLite databases with role-based access control (RBAC) supporting multi-user laboratory environments. Export options include CSV, PDF reports, and direct LIMS integration via ASTM E1394-compliant HL7 messaging. Audit trails are immutable and support retrospective review during internal QA audits or external inspections under ISO 9001 or API RP 546.

Applications

• Routine wear metal analysis (Fe, Cu, Al, Cr, Pb, Si) in engine, transmission, and hydraulic oil samples prior to ICP-OES measurement (e.g., Avio® series spectrometers).
• Preparation of diluted oil suspensions for quantitative particle counting and sizing using SPOS-based analyzers such as the LPC 500™ or HIAC 9703+.
• Supporting predictive maintenance programs in power generation, marine propulsion, wind turbine operations, and heavy-duty off-highway equipment fleets.
• Enabling high-throughput screening in commercial oil analysis laboratories accredited to ISO/IEC 17025.
• Facilitating method transfer between R&D, QC, and field service labs through standardized, version-controlled dilution protocols.

FAQ

What diluents are compatible with the OilPrep 4?
Kerosene is the primary and validated diluent; other low-aromatic hydrocarbon solvents may be used subject to method validation per ASTM D7414.
Can the system handle viscous or sediment-laden samples?
Yes—variable aspiration speed, extended dwell time, and ultrasonic meniscus detection allow reliable handling of oils up to ISO VG 680 (approx. 680 cSt at 40°C), provided particulates are <100 µm in diameter.
Is remote monitoring or troubleshooting supported?
The system includes embedded Ethernet connectivity and supports secure remote desktop access for PerkinElmer Field Application Scientists under signed service agreements.
How often does the ultrasonic sensor require recalibration?
No routine recalibration is required; performance verification is conducted during semi-annual PQ (Performance Qualification) using NIST-traceable reference standards.
Does the OilPrep 4 meet environmental safety requirements for solvent handling?
When operated within a certified fume hood or ventilated enclosure, it complies with OSHA 1910.1200 (HCS) and local VOC emission regulations; optional integrated solvent capture trays are available.