Rainin Pipet-Lite™ XLS Adjustable-Spacing Multichannel Pipette

Overview

The Rainin Pipet-Lite™ XLS Adjustable-Spacing Multichannel Pipette is an engineered solution for high-throughput liquid handling across heterogeneous microplate formats. Unlike fixed-spacing multichannel pipettes, the XLS series implements a precision-machined, continuous mechanical spacing adjustment mechanism—based on coaxial cam-and-gear translation—to dynamically reconfigure inter-channel distance without compromising tip alignment, plunger synchronization, or volumetric accuracy. This design addresses a critical workflow bottleneck in life science laboratories where samples must be transferred between tubes, reservoirs, and plates of varying well geometries (e.g., 24-, 48-, 96-, and 384-well formats) while maintaining traceable, repeatable delivery. The device operates on standard air-displacement principles per ISO 8655-2:2022, with all models calibrated and verified at multiple points across their volume range using gravimetric methodology under controlled environmental conditions (20–25°C, 40–60% RH).

Key Features

• Continuous Inter-Channel Spacing Adjustment: Dual-knob control system enables precise, repeatable setting of channel spacing from 9 to 19 mm (6-channel) or 9 to 14 mm (8-channel), with engraved millimeter-scale indicators eliminating estimation error.
• LTS (Low-Torque Seal) Tip Interface: Patented conical tip cone geometry and spring-loaded sleeve ensure consistent, low-force, first-time sealing across all channels—eliminating manual twisting, rocking, or excessive force during tip attachment.
• RFID-Embedded Calibration Management: Each unit contains a factory-programmed, read-only RFID tag storing serial number, calibration date, service history, and metrological parameters—compatible with Rainin’s LiteTouch™ software and third-party LIMS systems supporting ISO/IEC 17025-compliant traceability.
• Ergonomic Mechanical Design: Balanced weight distribution, low actuation force (< 1.2 N for full stroke), and soft-touch polymer grip reduce operator fatigue during extended use; compliant with ISO 13485-certified manufacturing standards.
• Modular Volume Range Options: Five distinct configurations cover critical assay volumes: LA6-300XLS (20–300 µl), LA6-1200XLS (100–1200 µl), LA8-50XLS (5–50 µl), LA8-300XLS (20–300 µl), and LA8-1200XLS (100–1200 µl).

Sample Compatibility & Compliance

The Pipet-Lite™ XLS is validated for use with standard conical polypropylene pipette tips meeting ISO 8655-3:2022 dimensional tolerances, including universal LTS-compatible tips and certified low-retention variants. It supports aqueous solutions, buffers, cell suspensions, and viscous media up to 10 mPa·s (e.g., glycerol–PBS mixtures) when operated within specified temperature and humidity ranges. All models conform to ISO 8655-2:2022 for performance testing (accuracy ±0.8%, precision ≤0.3% CV), and support GLP/GMP workflows through RFID-based calibration documentation that satisfies FDA 21 CFR Part 11 requirements for electronic records and signatures when integrated with compliant data management platforms.

Software & Data Management

While the Pipet-Lite™ XLS operates manually, its embedded RFID enables seamless integration into digital lab infrastructure. Rainin LiteTouch™ software (v3.2+) reads calibration metadata directly from the pipette, auto-populates instrument logs, and generates PDF calibration certificates compliant with ISO/IEC 17025 Annex A. Audit trails include timestamps, user IDs, calibration technician credentials, and environmental monitoring data captured at time of verification. Data export supports CSV and XML formats for ingestion into ELN, LIMS, or QMS systems—ensuring full alignment with ALCOA+ (Attributable, Legible, Contemporaneous, Original, Accurate) data integrity principles.

Applications

• Genomic library preparation workflows involving parallel transfer from PCR tubes to 96-well PCR plates and NGS index plates.
• High-content screening (HCS) plate seeding across variable-density wells (e.g., 24-well tissue culture plates to 384-well assay plates).
• ELISA and immunoassay setup requiring precise, multi-well reagent dispensing with cross-format flexibility.
• Cell line expansion protocols involving serial dilution from master stocks into multiwell culture vessels.
• QC/QA testing in biopharmaceutical manufacturing where inter-batch reproducibility and instrument traceability are mandated under ICH Q5A and EU GMP Annex 11.

FAQ

Is the Pipet-Lite™ XLS compatible with non-LTS tips?
No—only LTS-certified tips guarantee proper seal formation and volumetric accuracy. Standard universal tips may cause leakage, inconsistent aspiration, or calibration drift.
Can spacing be locked during operation to prevent accidental adjustment?
Yes—the dual-knob system includes a mechanical lock ring that fixes the set spacing value, preventing unintended shifts during pipetting cycles.
How often does the pipette require recalibration?
Per ISO 8655-5:2022, recalibration is recommended every 3–6 months depending on usage frequency and criticality of application; however, RFID-tracked service history enables risk-based scheduling aligned with internal SOPs.
Does the XLS series support reverse pipetting?
Yes—when used with appropriate LTS reverse-pipetting tips and trained technique, all models support reverse mode for viscous or volatile liquids, with volume correction factors applied per ISO 8655-2 Annex B.
What environmental conditions are required for optimal performance?
Operation is validated at 15–30°C ambient temperature and 30–70% relative humidity; deviations beyond this range may affect air displacement accuracy and require recalibration per ISO 8655-6:2022 guidelines.