Truelab MTN-2800D Aluminum Block Dry-Block Nitrogen Evaporator (12/24/40 Position)

Overview

The Truelab MTN-2800D Aluminum Block Dry-Block Nitrogen Evaporator is an engineered solution for controlled, solvent-free concentration of liquid samples prior to chromatographic or mass spectrometric analysis. Unlike water-bath evaporators, this dry-block system employs a precisely machined, high-mass aluminum heating block to deliver rapid thermal response and exceptional temperature homogeneity across all sample positions. Nitrogen gas—delivered via independently adjustable, corrosion-resistant stainless-steel or PTFE-coated needles—is directed tangentially across the solvent surface, accelerating evaporation while minimizing oxidation and analyte degradation. The instrument operates on the principle of forced-convection solvent removal under inert atmosphere, making it suitable for thermally sensitive compounds, volatile organics, and regulated bioanalytical workflows requiring trace-level recovery consistency.

Key Features

• High-integrity aluminum heating block (70 mm height) ensures uniform thermal distribution and minimal axial temperature gradient—critical for inter-sample reproducibility in multi-position runs.
• Independent nitrogen flow control per channel (0–10 L/min range) enables method-specific optimization without cross-contamination risk.
• Dual operating modes: programmable timed evaporation (10 min – 99 h 59 min) and continuous恒温 mode with real-time temperature feedback.
• Quad-digit LED display simultaneously shows set temperature, actual block temperature, timer setpoint, and active countdown—supporting unambiguous operator verification during GLP audits.
• Integrated safety architecture includes hardware-based overtemperature cutoff (185°C), automatic shutdown upon reaching user-defined endpoint, and a recessed spill containment tray beneath the block to protect electronics from accidental liquid ingress.
• Modular design accommodates interchangeable heating blocks: 12-, 24-, and 40-position configurations share identical thermal control logic, firmware, and gas manifold interface—enabling lab-scale flexibility without revalidation.

Sample Compatibility & Compliance

The MTN-2800D supports standard borosilicate glass test tubes (10–15 mm OD), including 13 × 100 mm, 16 × 150 mm, and 18 × 150 mm formats. Its dry-block geometry eliminates bath fluid contamination risks associated with water- or oil-based systems, satisfying ISO/IEC 17025 clause 5.4.2 requirements for equipment suitability in accredited testing laboratories. While not certified to IEC 61000-6-3 or UL 61010-1 out-of-box, the unit conforms to general electrical safety principles for laboratory use (double-insulated construction, grounded chassis, low-voltage sensor circuitry). It is routinely deployed in environments aligned with FDA 21 CFR Part 11 expectations when paired with validated electronic lab notebooks (ELNs) that capture instrument parameters, timestamps, and operator IDs as part of audit trails.

Software & Data Management

The MTN-2800D operates as a standalone benchtop instrument with no embedded microprocessor or network interface. All parameter inputs and status monitoring occur via front-panel controls and LED readouts—eliminating software validation overhead. For labs requiring digital data capture, analog voltage outputs (0–5 V DC proportional to block temperature) and relay-triggered dry-contact signals (for external logging or PLC integration) are available upon request. This architecture supports 21 CFR Part 11 compliance when connected to validated third-party data acquisition systems that enforce user authentication, electronic signatures, and immutable audit logs. No proprietary drivers or cloud dependencies are introduced—ensuring long-term operational continuity and IT infrastructure compatibility.

Applications

• Routine cleanup of environmental extracts (e.g., EPA Method 525.3, 8270D) prior to GC-MS analysis.
• Concentration of plasma, urine, or tissue homogenates in clinical toxicology and forensic screening workflows.
• Preparative desolvation of SPE eluates and LLE fractions in pharmaceutical QC laboratories adhering to ICH Q2(R2) guidelines.
• High-throughput sample preparation for metabolomics and lipidomics studies where oxygen-sensitive analytes (e.g., eicosanoids, hydroperoxides) require inert handling.
• Method development for residual solvent analysis (ICH Q3C) using headspace-GC, where precise, repeatable volume reduction directly impacts calibration linearity.

FAQ

Does the MTN-2800D support programmable ramping or multi-step temperature profiles?
No. It provides only single-setpoint temperature control with optional timer-based endpoint termination.
Can I use compressed air instead of nitrogen?
Not recommended. Air introduces oxygen and moisture, increasing oxidation risk and potential for condensation within the gas lines; nitrogen (≥99.5% purity) is required for inert atmosphere integrity.
Is the heating block interchangeable between 12-, 24-, and 40-position configurations?
Yes—blocks are mechanically and electrically compatible; however, each block variant requires corresponding needle manifolds and mounting fixtures for optimal gas alignment.
What maintenance is required for long-term reliability?
Annual inspection of gas needle alignment, cleaning of the drip tray and block surface with isopropanol, and verification of temperature sensor calibration using a NIST-traceable reference thermometer.
Does the unit meet CE or RoHS requirements?
It complies with RoHS 2011/65/EU material restrictions; CE marking is not applied, as the device falls outside the scope of the EU Machinery Directive for standalone laboratory equipment without moving parts posing mechanical hazard.