Raykol EVA 80 High-Throughput Automated Parallel Evaporator

Overview

The Raykol EVA 80 High-Throughput Automated Parallel Evaporator is an engineered solution for rapid, reproducible solvent removal from multiple samples under controlled thermal and gaseous conditions. Based on regulated nitrogen gas flow combined with precise water-bath heating, the system employs parallel evaporation principles—where inert gas (N₂) is directed tangentially across the liquid surface to accelerate solvent volatilization while minimizing analyte degradation or oxidation. Designed for laboratories requiring consistent throughput in regulated environments, the EVA 80 integrates thermally stable bath control, real-time gas flow regulation per channel, and intelligent liquid-level tracking to maintain optimal evaporation distance throughout the process. Its architecture supports unattended operation for extended durations, making it suitable for routine QC/QA workflows in environmental, food safety, pharmaceutical, and life science applications where batch integrity and method traceability are critical.

Key Features

• 80-position high-capacity sample platform enabling simultaneous processing of up to 80 tubes (10–60 mm diameter), compatible with standard SPE collection tubes and Fotector Plus SLE/SPE racks without transfer.
• Patented variable-diameter nitrogen delivery needle (CN Patent No. ZL 2020 3 0114309.X) ensures uniform nozzle tip positioning relative to each sample meniscus, delivering consistent laminar gas flow across all channels.
• Auto-following needle descent mechanism maintains constant distance between needle tip and liquid surface during volume reduction—critical for reproducible evaporation kinetics and final volume accuracy (e.g., <0.3 mL RSD when reducing 15 mL ethyl acetate to 1 mL).
• Independent per-channel gas flow control (0–100 L/min total, digitally regulated) allows selective activation/deactivation and method-specific flow profiles without cross-channel interference.
• Triple-pane transparent acrylic bath chamber with front/side/rear viewing windows enables full visual monitoring of sample status, needle alignment, and condensate formation without opening the unit.
• Modular isolation design separates nitrogen delivery module from water bath assembly, eliminating thermal coupling risks and enhancing operator safety during maintenance or cleaning.
• Comprehensive safety suite includes low-pressure N₂ cutoff, dry-bath overtemperature lockout, real-time water level sensing, active exhaust ducting with integrated fan, and auditable operational log storage.

Sample Compatibility & Compliance

The EVA 80 accommodates a broad range of tube formats—including 13 × 100 mm, 16 × 150 mm, and 25 × 150 mm glass or polypropylene vials—without adapter kits. It is validated for use with common organic solvents (e.g., acetonitrile, methanol, ethyl acetate, hexane) and aqueous matrices encountered in EPA Method 525.3, AOAC 2007.01, ISO 17025-accredited labs, and GLP-compliant residue analysis workflows. The system’s hardware and firmware support audit-ready data integrity: all method parameters (temperature setpoint, gas flow rate per channel, evaporation duration, follow-speed profile) are stored with timestamps; run logs include start/stop times, alarm events, and user-initiated interventions—facilitating compliance with FDA 21 CFR Part 11 requirements when paired with validated LIMS integration.

Software & Data Management

The embedded control interface provides intuitive touchscreen navigation for method creation, editing, and recall. Up to 99 user-defined methods can be saved locally, each containing programmable parameters: target temperature, ramp rate, dwell time, per-channel gas flow setpoints, needle descent speed (0.1–5 mm/s), and endpoint criteria (time-based or volume-estimation via calibrated time/volume correlation). All settings are exportable as CSV for external documentation or SOP archiving. Optional RS-232/USB connectivity enables remote monitoring and script-based scheduling via third-party laboratory automation platforms. No cloud dependency or vendor-hosted software is required—data remains fully under institutional control.

Applications

• Environmental testing: concentration of extractable organics from water, soil, and air sampling media prior to GC-MS or LC-MS/MS analysis.
• Food safety: multi-residue pesticide and veterinary drug screening in fruits, vegetables, meat, and dairy using QuEChERS or dSPE workflows.
• Pharmaceutical R&D: parallel solvent exchange and intermediate drying in API purification, stability studies, and impurity profiling.
• Clinical & forensic toxicology: preparation of biological fluids (urine, plasma) for targeted metabolite quantification.
• Materials science: removal of casting solvents from polymer precursor solutions prior to film formation or rheological characterization.

FAQ

Does the EVA 80 require external compressed nitrogen gas?
Yes—it is designed to operate with externally supplied nitrogen at 0.4–0.6 MPa pressure. For continuous supply, Raykol recommends pairing with the AutoEVA-G series on-site nitrogen generator.
Can the system be integrated into automated sample preparation lines?
Yes—the 80-position platform accepts standard SPE racks and features mechanical alignment guides compatible with robotic arm end-effectors (e.g., gripper clearance ≥30 mm above tray surface). Digital I/O ports support TTL-level start/stop triggers.
Is calibration documentation available for regulatory submissions?
Factory calibration certificates for temperature sensor (±0.1 °C accuracy) and mass flow controllers (±1% FS) are provided with each unit. IQ/OQ protocols are available upon request for GxP validation.
What maintenance is required for long-term reliability?
Routine tasks include quarterly descaling of the water bath, biannual inspection of O-rings and needle seals, and annual verification of gas flow linearity using a certified rotameter or thermal mass flow calibrator.
How does the EVA 80 compare to traditional manifold-style nitrogen evaporators?
Unlike fixed-height manifolds, the EVA 80’s dynamic needle positioning, per-channel flow regulation, and closed-loop thermal control eliminate inter-sample variability caused by uneven gas distribution or bath stratification—resulting in significantly improved inter-run precision and reduced method development time.