Rainin E4 XLS+ Electric Multi-Channel Pipette

Overview

The Rainin E4 XLS+ Electric Multi-Channel Pipette is a precision-engineered liquid handling instrument designed for high-throughput, reproducible multichannel dispensing in regulated and research-intensive laboratory environments. Built upon Rainin’s proprietary LTS (Low Retention Standard) tip interface and microprocessor-controlled stepper motor architecture, the E4 XLS+ delivers traceable, repeatable volumetric performance across its full operational range—from ultra-low volumes of 0.01 µL up to 1200 µL. Unlike manual or basic electric pipettes, the E4 XLS+ employs closed-loop feedback control: every piston movement is governed by an onboard 4,000-step resolution motor, with automatic zero-point recalibration initiated at the conclusion of each aspiration/dispense sequence. This ensures long-term volumetric stability without drift—critical for applications requiring adherence to ISO 8655, ASTM E1154, and USP analytical instrument qualification standards.

Key Features

• Multi-Channel Precision: Available in 8-channel and 12-channel configurations, enabling simultaneous, synchronized aspiration and dispensing across entire microtiter plate rows—reducing pipetting time by up to 85% compared to single-channel workflows.
• LTS Tip Interface: Patented low-force tip attachment and ejection system guarantees consistent seal formation across all channels without twisting or manual tightening; tip ejection force is reduced to ≤0.6 kg when used with certified LTS tips.
• Intelligent Liquid Handling Modes: Includes AutoPace for timed repetitive dispensing, Continuous Dispense for serial dilutions, and Multi-Dispense for splitting one aspirated volume into multiple aliquots—each programmable via intuitive joystick navigation.
• Ergonomic Design: Ambidextrous body geometry, contoured finger hooks, and tactile joystick controls allow extended use with gloves; weight distribution minimizes wrist torque and fatigue during high-cycle operations.
• Onboard Intelligence: Full-color graphical display, rotary encoder, and context-sensitive menu system enable rapid protocol selection, parameter adjustment, and real-time status monitoring—including battery level, cycle count, and calibration history.
• GLP/GMP-Ready Architecture: Password-protected user modes, encrypted service logs, tamper-evident audit trails, and configurable lockout settings support compliance with 21 CFR Part 11, ISO/IEC 17025, and pharmaceutical quality systems.

Sample Compatibility & Compliance

The E4 XLS+ is validated for use with aqueous, viscous (e.g., glycerol-containing buffers), and volatile liquids—including ethanol, DMSO, and protein solutions—when paired with Rainin PureSpeed™ low-retention tips. Its LTS tip interface eliminates channel-to-channel variability caused by inconsistent tip seating, a common source of error in multi-channel applications. The device meets ISO 8655-2:2022 requirements for gravimetric testing of multi-channel pipettes and supports full traceability through integrated cycle logging (aspiration/dispense counts, date/time stamps, operator ID). All firmware and calibration records are stored in non-volatile memory with write-protection, satisfying data integrity requirements under EU Annex 11 and FDA guidance on electronic records.

Software & Data Management

While fully functional as a standalone instrument, the E4 XLS+ integrates seamlessly with Rainin’s free LiteTouch™ PC software for advanced protocol development, firmware updates, and centralized fleet management. Software-generated reports include full audit trails compliant with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate), with export options to CSV, PDF, or LIMS-compatible XML. All user-modifiable parameters—including volume, speed profiles, mixing steps, and pause intervals—are digitally signed and version-controlled. Service alerts trigger automatically upon reaching predefined maintenance thresholds (e.g., 10,000 cycles), prompting secure remote diagnostics or scheduled calibration—ensuring uninterrupted operation in GxP environments.

Applications

• High-throughput screening (HTS) in drug discovery pipelines
• qPCR and NGS library preparation requiring precise multi-well template transfer
• ELISA, cell-based assays, and immunoblotting workflows involving parallel reagent addition
• Cell culture passaging and media supplementation across 96-/384-well formats
• Quality control testing in biopharmaceutical manufacturing (e.g., potency assays, residual host-cell DNA quantification)
• Academic and core facility labs performing standardized SOP-driven liquid handling

FAQ

What regulatory standards does the E4 XLS+ support?
It complies with ISO 8655, ASTM E1154, USP , and provides built-in functionality to meet 21 CFR Part 11 and EU Annex 11 data integrity requirements.
Can I use non-LTS tips with this pipette?
No—the E4 XLS+ is engineered exclusively for LTS tips; using non-certified tips compromises accuracy, repeatability, and voids warranty and compliance validation.
How is calibration verified and documented?
Each unit ships with a NIST-traceable calibration certificate; field recalibration is performed using Rainin’s CalCheck™ verification tool, with results logged automatically in encrypted onboard memory.
Is battery life sufficient for full-shift operation?
Yes—the rechargeable lithium-ion battery supports >10,000 pipetting cycles per charge (equivalent to ~12 hours of continuous use), with state-of-charge indication displayed in real time.
Can multiple users share one E4 XLS+ while maintaining individual settings?
Yes—up to 20 user-specific protocols can be saved onboard, each with customizable access permissions and password protection for critical parameters.