Auto EVA 80 High-Throughput Automated Parallel Evaporator

Overview

The Auto EVA 80 is an engineered high-throughput automated parallel evaporator designed for quantitative solvent removal under controlled nitrogen gas flow and regulated thermal conditions. It operates on the principle of gentle, inert-gas-assisted surface evaporation—leveraging precise pneumatic regulation, programmable temperature control, and dynamic liquid-level tracking to ensure reproducible concentration endpoints across large sample batches. Unlike manual or semi-automated systems, the Auto EVA 80 integrates closed-loop feedback for gas flow consistency, real-time thermal monitoring, and mechanical adaptability to changing meniscus height—making it suitable for method-critical applications in environmental, food safety, pharmaceutical, and clinical laboratories where inter-batch precision and audit-ready traceability are required.

Key Features

• 80-position parallel processing platform — Optimized for standard 15 mL conical tubes; compatible with Fotector Plus SPE fraction collection racks without tube transfer.
• Individually addressable nitrogen channels — Each of the 80 gas outlets features independent on/off control and calibrated flow regulation, enabling selective activation and method-specific optimization.
• Patented variable-diameter nitrogen needle assembly (Patent No. ZL 2020 3 0114309.X) — Ensures uniform tip positioning relative to the liquid surface across all channels; incorporates auto-following vertical movement synchronized with solvent volume reduction.
• Triple-glazed transparent water bath chamber — Provides unobstructed visual access to all sample positions during operation, supporting real-time process verification and operator intervention if needed.
• Modular thermal–pneumatic isolation — Separates the heating bath from the nitrogen delivery module to eliminate cross-contamination risk and enhance personnel safety.
• Integrated safety architecture — Includes low-pressure gas cutoff, dry-bath overheat detection, active exhaust ventilation with external ducting capability, and automatic shutdown upon critical fault detection.
• Method-driven automation — Supports storage and recall of user-defined protocols—including target final volume, nitrogen flow rate, bath temperature setpoint, descent speed, and total run duration—enabling fully unattended operation.

Sample Compatibility & Compliance

The Auto EVA 80 accommodates common laboratory consumables including 10–15 mL conical-bottom glass or polypropylene tubes, standard SPE collection vials, and 16 mm OD round-bottom test tubes. Its design aligns with routine workflow requirements under ISO/IEC 17025-accredited testing environments and supports compliance with analytical method validation guidelines outlined in USP , EPA Methods 508.1/8081B, and EN 15662 for pesticide residue analysis. While not intrinsically certified for GMP or FDA 21 CFR Part 11, the system’s built-in operational logging—recording timestamps, parameter settings, alarm events, and method execution history—facilitates retrospective review and supports GLP documentation practices.

Software & Data Management

The instrument is operated via an embedded touchscreen interface with intuitive navigation and hierarchical method management. All user-defined methods are stored internally with version-timestamped metadata. The system logs every operational cycle—including start/stop time, actual bath temperature profiles, nitrogen pressure readings, and triggered alarms—with export capability via USB to CSV format. No proprietary cloud service or vendor-hosted software is required; data files are human-readable and interoperable with LIMS platforms through standard import routines. Audit trail functionality meets minimum requirements for laboratory quality assurance programs requiring traceable instrument usage records.

Applications

• Environmental analysis: Concentration of aqueous and organic extracts from soil, sediment, wastewater, and air sampling media prior to GC-MS or LC-MS/MS analysis.
• Food safety testing: Final-stage solvent reduction in multi-residue pesticide and veterinary drug screening workflows following QuEChERS or SPE cleanup.
• Pharmaceutical R&D: Parallel concentration of reaction mixtures, purification fractions, or stability study samples under inert atmosphere.
• Clinical & biochemical research: Preparation of plasma, urine, or tissue homogenate extracts for metabolite profiling and biomarker quantification.
• Materials science: Solvent removal from polymer solutions or nanoparticle dispersions prior to characterization.

FAQ

What is the maximum recommended solvent volume per tube?
The system is validated for up to 15 mL of ethyl acetate or similar low-boiling solvents per position, with endpoint precision (final volume CV) maintained at ≤ ±0.3 mL when reducing to 1 mL.
Is the water bath temperature range adjustable?
Yes—the heating bath supports programmable setpoints; exact operating range and stability specifications are available upon technical inquiry.
Can the Auto EVA 80 be integrated with a nitrogen generator?
It is fully compatible with the AutoEVA-G series on-site nitrogen generators, eliminating dependency on high-pressure cylinders and enabling continuous operation.
Does the system support remote monitoring or network connectivity?
No Ethernet or Wi-Fi interface is provided; operation and data retrieval are performed locally via the front-panel interface and USB export.
How is calibration and maintenance documented?
The device does not include onboard calibration routines; users are advised to perform periodic verification of bath temperature accuracy and gas flow rates using NIST-traceable reference instruments per internal SOPs.