Thermo Scientific Digital Metal Bath
| Brand | Thermo Fisher |
|---|---|
| Origin | Tianjin, China |
| Manufacturer Type | OEM Producer |
| Regional Classification | Domestic (China) |
| Model | Digital |
| Price Range | USD 140 – 700 |
Overview
The Thermo Scientific Digital Metal Bath is a precision-engineered dry-block heater designed for consistent, uniform thermal control of samples in vials, tubes, and microplates across life science, clinical diagnostics, and quality control laboratories. Unlike water baths, this metal bath utilizes solid aluminum heating blocks to deliver rapid thermal response, minimal evaporation risk, and contamination-free operation—critical for sensitive enzymatic reactions, DNA denaturation, sample thawing, and reagent pre-warming. Its core architecture integrates a high-stability PID (Proportional-Integral-Derivative) temperature controller with an embedded RTD (Resistance Temperature Detector) probe, enabling real-time feedback and closed-loop regulation. The device operates within a standard ambient temperature range of 10–30 °C and achieves setpoint stability of ±0.3 °C at 37 °C—a performance benchmark aligned with ISO/IEC 17025-recommended verification protocols for thermal equipment used in accredited testing labs.
Key Features
- Digital LED display showing both set temperature and remaining countdown time, with resolution of 0.1 °C and 1 minute respectively
- PID-controlled heating system with auto-tuning capability and built-in temperature calibration function accessible via front-panel menu
- Programmable timer with adjustable range from 1 minute to 9 hours 59 minutes; automatic shut-off upon completion
- Interchangeable aluminum heating blocks (e.g., 0.2 mL, 0.5 mL, 1.5/2.0 mL, 15 mL, and 50 mL configurations) engineered for optimal thermal conductivity and dimensional accuracy
- Powder-coated cold-rolled steel housing providing mechanical robustness, corrosion resistance, and ease of decontamination using 70% ethanol or hospital-grade disinfectants
- Over-temperature protection circuitry compliant with IEC 61010-1 safety standards for laboratory electrical equipment
Sample Compatibility & Compliance
The Digital Metal Bath accommodates standard laboratory consumables including PCR tubes, microcentrifuge tubes (Eppendorf-style), screw-cap vials, and shallow-well microplates. Block inserts are designed to minimize air gaps and maximize conductive heat transfer—ensuring inter-vial temperature uniformity ≤ ±0.8 °C across the block surface (measured per ASTM E220-19 methodology). All materials in contact with samples meet USP Class VI biocompatibility requirements. While not certified for GLP/GMP environments out-of-the-box, the unit supports traceable calibration through external reference thermometers (e.g., NIST-traceable platinum RTDs) and maintains audit-ready operational logs when paired with Thermo Fisher’s optional data logger accessories.
Software & Data Management
This standalone instrument does not include onboard data logging or USB/Bluetooth connectivity. However, it supports manual documentation workflows compatible with electronic lab notebooks (ELNs) and LIMS platforms. Users may record setpoints, duration, block type, and calibration dates as part of SOP-driven procedures. For regulated environments requiring 21 CFR Part 11 compliance, integration with third-party validation packages (e.g., Vaisala viewLinc or QualiTrak) is feasible via external temperature monitoring probes connected to validated data acquisition systems.
Applications
- Enzyme incubation (e.g., restriction digests, ligations, kinase assays)
- Controlled-rate thawing of cryopreserved cell suspensions and plasma aliquots
- Pre-heating of culture media, buffers, and staining solutions prior to use
- Standardization of reaction temperatures in ELISA, lateral flow assay development, and antigen retrieval protocols
- Stabilization of thermolabile compounds during extraction and derivatization steps in analytical chemistry workflows
FAQ
What is the operating temperature range of the Digital Metal Bath?
The unit operates from ambient +5 °C up to 100 °C, with typical factory-set maximum limit at 100 °C for safety and longevity.
Can the heating block be autoclaved?
No—aluminum blocks are not autoclavable due to thermal expansion mismatch and oxide layer degradation; however, they are fully compatible with liquid chemical sterilization (e.g., 1–2% sodium hypochlorite or 70% isopropanol) and UV-C surface decontamination.
Is calibration certificate included with purchase?
A basic factory calibration report is provided; full ISO/IEC 17025-accredited calibration with uncertainty budget requires separate service engagement through Thermo Fisher’s Field Service Network.
How often should temperature verification be performed?
Per CLSI EP23-A and ISO 15197 guidelines, daily verification using a calibrated reference thermometer is recommended before first use; periodic full calibration every 6–12 months depending on usage intensity and regulatory context.
Does the unit support multi-step temperature ramping?
No—this model provides single-setpoint control only; programmable ramp/soak profiles require upgrading to the Thermo Scientific™ Precision™ Series Metal Baths with touchscreen interface and protocol storage.
