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E4 XLS+
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High-Performance, Electronic Pipette
Mettler Toledo Single Channel Electronic Pipettes
The E4 XLS+ single-channel electronic pipette features a cushioned joystick control, making protocol setup and execution simple. It ensures consistent volume delivery and identical speed for every step. Users can measure precise volumes in Manual mode and dispense multiple aliquots in Multi-dispense mode.
Lightweight and ambidextrous, the E4 XLS+ fits comfortably in either hand and is exceptionally well balanced during pipetting. The ergonomically shaped finger hook allows a relaxed grip, while low operating forces and the built-in silicone shock absorber in the tip ejector make pipetting effortless. On LTS-equipped models, tip ejection requires only 0.6 kg of force, enhancing comfort and ease of use.
Advanced Motor-Driven Precision
The technical foundation of the Rainin E4 XLS+ is its high-performance stepper motor, which governs the movement of the internal piston. Unlike manual sampling tools where the speed of aspiration depends on the user's thumb movement, the electronic motor moves at a constant, user-defined rate. This ensures that every aliquot is handled with identical force, significantly reducing the standard deviation of results. This motor-driven architecture is critical for achieving high accuracy when working with complex liquids or performing repetitive dispensing tasks.
Multi-Mode Versatility for Complex Workflows
The E4 XLS+ is designed with a broad suite of operational modes that extend far beyond simple sampling. Users can select "Multi-Dispense" to aliquot a large volume into several smaller doses, "Dilute" to mix samples and buffers in a single step, or "Titrate" for precision volume control. Technically, each mode is optimized for a specific fluid dynamic, allowing the analyst to execute sophisticated protocols with a single instrument. These pre-programmed functions improve laboratory throughput by automating the calculations and movements required for complex liquid handling.
Ergonomic Design and Strain Reduction
A primary technical objective of the electronic sampling tool is to minimize Repetitive Strain Injuries (RSI). The E4 XLS+ features a lightweight, balanced design and a finger hook that allows for a relaxed grip. The electronic operation requires zero force to move the piston, as the internal motor performs all the mechanical work. This reduces the physical load on the hand and thumb, which is essential for maintaining accuracy during long sampling sessions. The ergonomic shape ensures that the instrument remains comfortable even after hours of continuous use.
High-Resolution Display and Joystick Navigation
The user interface of the E4 XLS+ utilizes a large, high-resolution color screen that provides real-time feedback on volume settings and operational status. Navigation is performed via a 360-degree joystick, which allows for rapid menu selection and parameter adjustment. Technically, this interface provides clear visual cues for aspirated volumes and remaining dispensing steps. The screen also alerts users to battery status and service requirements, ensuring that the sampling tool is always ready for calibrated performance.
RFID Technology for Asset Management
The E4 XLS+ integrates an RFID (Radio Frequency Identification) chip in every unit to support advanced asset management and compliance. This chip stores the tool's serial number, calibration history, and service data. When scanned with an optional RFID reader, the data is transmitted directly to management software. This technical feature ensures full traceability in GLP (Good Laboratory Practice) and GMP (Good Manufacturing Practice) environments, simplifying the audit process and ensuring that only calibrated sampling tools are used in critical experiments.
LTS (LiteTouch System) for Low Ejection Force
Mettler Toledo utilizes the patented LiteTouch System (LTS) in its sampling tools to reduce the forces required for tip loading and ejection. The LTS design features a cylindrical tip and nozzle with a positive stop, which prevents users from jamming the tips onto the tool. Technically, this ensures a perfect leak-proof seal with a very low insertion force. More importantly, it reduces tip ejection force by up to 80%, further protecting the user's hand from mechanical stress while maintaining a secure connection between the tip and the tool.
Customization and Administrative Control
For laboratories requiring strict adherence to protocols, the E4 XLS+ offers administrative security features. Administrators can lock specific settings or create customized "Admin" modes that limit the functions available to the user. This ensures that specific SOPs (Standard Operating Procedures) are followed exactly as written, preventing unauthorized changes to volume limits or speed settings. This technical control is vital for maintaining consistency across a large team of analysts and ensuring the integrity of collaborative research.
Long-Life Lithium-Ion Battery and Charging Options
To support uninterrupted laboratory work, the E4 XLS+ is powered by a high-capacity lithium-ion battery. The battery is designed for long operational life and fast recharging times. The system offers multiple charging solutions, including a stand-mounted charger that keeps the tool in an upright position to protect the internal sensors and piston. Technically, the battery management system prevents memory effects and ensures that the tool maintains its electronic performance even at low charge levels, providing reliability throughout the entire workday.
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