NüVE NB5/NB9/NB20 Non-Agitated Constant-Temperature Water Bath

Overview

The NüVE NB5/NB9/NB20 Non-Agitated Constant-Temperature Water Bath is a precision-engineered thermal platform designed for stable, uniform, and traceable temperature maintenance in microbiological, pharmaceutical, clinical, and industrial laboratory environments. Unlike circulating (dynamic) water baths that rely on internal pumps to homogenize temperature distribution, this series employs static heating—direct resistive heating elements integrated into the stainless-steel bath base—combined with triple-layer thermal insulation to minimize heat loss and maximize spatial temperature stability. The absence of mechanical agitation eliminates vibration-induced sample disturbance and reduces maintenance requirements, making it ideal for applications where mechanical perturbation must be avoided (e.g., sedimentation assays, gel solidification, enzyme incubation, or long-term cell culture preparation). Temperature control is managed by the proprietary N-Prime™ microprocessor system, delivering ±0.1 °C accuracy across the full operating range (5 °C above ambient to 99.9 °C), with stability of ±0.1 °C at 37 °C under standard conditions (22 °C ambient, lid closed). All models comply with IEC 61010-1 safety standards for laboratory electrical equipment and are CE-marked for conformity with EU directives.

Key Features

• Static thermal design: No internal pump or circulation system—maximizes usable bath volume and eliminates sample vibration.
• N-Prime™ programmable microprocessor controller with intuitive membrane keypad and high-contrast LCD display showing real-time temperature and timer status.
• Password-protected configuration menu prevents unauthorized parameter changes—supports GLP-compliant operation in regulated environments.
• Programmable alarm thresholds: Configurable deviation limits (±0.5 °C or ±5 °C) trigger audible and visual alerts upon temperature excursion.
• Extended data logging: Timestamped temperature readings stored directly to USB memory stick at user-selectable intervals (1–999 minutes); supports up to 125 days of continuous recording.
• Dual-timer functionality: Independent countdown timer (1 min–99.9 h) and delayed start timer (1 min–99.9 h) enable unattended protocol initiation.
• Triple-layer thermal insulation: Optimized for energy efficiency and reduced external surface temperature—enhances operator safety and lab ambient stability.
• Dry-run protection thermostat: Automatically deactivates heating if water level falls below safe operational threshold.
• Stainless-steel (AISI 304) chamber: Corrosion-resistant, non-porous, and autoclavable-compatible interior; seamless construction minimizes crevices for simplified cleaning and decontamination.
• Factory-installable WiFi module: Enables remote monitoring and configuration via secure local network (optional; configured at time of manufacture).

Sample Compatibility & Compliance

The NB series accommodates a wide range of vessel formats—including glass beakers, plastic conical tubes, flasks, cuvettes, and multi-well plates—without requiring adapters or clamps. Its open-bath geometry provides unrestricted vertical and lateral access, facilitating manual pipetting, sampling, or insertion of large-format containers. Each model meets ISO/IEC 17025 calibration traceability requirements when used with NIST-traceable reference thermometers. The system supports audit-ready documentation per FDA 21 CFR Part 11 when paired with validated USB logging workflows and controlled user access protocols. All units are manufactured in accordance with ISO 9001-certified processes at NüVE’s Turkish production facility and conform to EN 61326-1 (EMC) and EN 61000-6-3 (emissions) standards.

Software & Data Management

No proprietary software installation is required. Data export is performed via standard USB mass-storage protocol: plug in any FAT32-formatted USB memory stick, select logging interval and duration via front-panel interface, and initiate recording. Output files are plain-text CSV format with ISO 8601 timestamps (YYYY-MM-DD HH:MM:SS), temperature values in °C, and metadata headers—including model ID, firmware version, and operator-defined session notes. This architecture ensures compatibility with LIMS integration, Excel-based trending, and automated QA/QC reporting pipelines. For laboratories implementing electronic record retention policies, the system supports periodic backup routines and manual archive segmentation without dependency on vendor-specific platforms.

Applications

• Microbiological incubation: Sterile media preparation, agar plate equilibration, and bacterial growth synchronization.
• Enzyme kinetics studies: Controlled denaturation, reactivation, and activity profiling at defined thermal setpoints.
• Immunology & serology: Serum inactivation, antigen-antibody binding optimization, and complement system assays.
• Pharmaceutical QC: Dissolution testing support, viscosity standardization, and excipient solubility evaluation.
• Molecular biology: DNA ligation, restriction digestion, and probe hybridization buffer equilibration.
• Industrial R&D: Polymer curing simulation, coating viscosity conditioning, and thermal stability screening of formulations.
• Educational labs: Reproducible demonstration of Arrhenius behavior, phase transition analysis, and calorimetric calibration.

FAQ

What distinguishes a non-agitated water bath from a circulating water bath?
Non-agitated water baths use passive thermal conduction and insulation to maintain uniform temperature without fluid movement—ideal for vibration-sensitive samples and simplified maintenance. Circulating baths achieve tighter uniformity (±0.05 °C) via forced convection but introduce mechanical noise and require regular pump servicing.
Can the NB series be used for oil baths?
Yes—provided the selected fluid has appropriate flash point, viscosity, and thermal stability within the operating range. Always consult fluid manufacturer specifications and verify compatibility with stainless-steel chamber materials.
Is the USB data logger compliant with 21 CFR Part 11?
The hardware supports core technical requirements (electronic signatures, audit trails, and record integrity) when deployed within a validated procedural framework—including user authentication, change control, and backup validation—but final compliance depends on site-specific SOPs and IT infrastructure.
What accessories are available for enhanced workflow integration?
Optional accessories include transparent acrylic lids (for evaporation reduction), perforated stainless-steel covers (for rack mounting), custom-fit tube racks, and factory-installed WiFi modules for networked monitoring.
How is temperature uniformity verified across the bath volume?
NüVE provides a Certificate of Conformance listing measured uniformity (±0.2 °C at 37 °C, 50 mm below surface, center-to-corner gradient) per ASTM E1112. Users may perform in-house verification using calibrated PT100 probes at defined grid points.