Grant BT5D Advanced High-Temperature Dry Block Heater

Overview

The Grant BT5D Advanced High-Temperature Dry Block Heater is a precision-engineered thermal platform designed for consistent, contamination-free heating of samples in demanding laboratory environments. Unlike oil or water baths, this dry block system employs a solid aluminum heating block with optimized thermal mass and high-efficiency resistive heating elements, operating on the principle of conductive heat transfer directly to sample vessels. Its operational range—from ambient +10 °C up to 400 °C—enables applications requiring sustained high-temperature incubation, enzyme inactivation, solvent evaporation, wax melting, and thermal stability testing. The unit’s sealed, non-volatile architecture eliminates vapor emissions and condensation risks, making it fully compatible with fume hoods, biosafety cabinets, and ISO Class 5+ cleanroom workflows. Engineered for long-term reliability under continuous duty cycles, the BT5D integrates microprocessor-based temperature regulation with real-time feedback control to maintain setpoint fidelity across the entire operating envelope.

Key Features

• Microprocessor-controlled digital temperature management with LED display and 1 °C resolution
• Programmable ramp rate (0.1 °C/min) for controlled thermal profiling and avoidance of sample shock
• Dual safety layers: independent over-temperature cut-off with user-adjustable limit and hardware-based thermal fuse
• High-stability performance: ±0.5 °C stability at temperatures ≤300 °C, validated per ASTM E220 calibration protocol
• Two interchangeable aluminum blocks: BT5D-16 accommodates thirty-eight 16 mm diameter tubes; BT5D-26 holds twenty-two 26 mm tubes—both blocks feature precision-machined wells with tight dimensional tolerances (±0.05 mm)
• Extended timer function (1–999 minutes) with audible end-of-cycle alert and auto-shutdown
• Low electromagnetic emission design compliant with EN 61326-1 for use near sensitive analytical instrumentation

Sample Compatibility & Compliance

The BT5D supports standard glass, polypropylene, and stainless-steel sample containers—including PCR tubes, culture vials, scintillation vials, and metal crucibles—without risk of immersion contamination or thermal degradation associated with liquid baths. Its anodized aluminum block resists oxidation and corrosion up to 400 °C, ensuring long-term dimensional integrity and thermal repeatability. The device meets CE and UKCA marking requirements for electrical safety (EN 61010-1) and electromagnetic compatibility (EN 61326-1). It is suitable for GLP-compliant laboratories where traceable temperature validation is required; users may perform in-house verification using NIST-traceable RTDs or thermocouples per ISO/IEC 17025 guidelines. While not inherently 21 CFR Part 11 compliant, audit-ready operation is supported via external logging systems interfaced through analog output (optional accessory).

Software & Data Management

The BT5D operates as a standalone instrument with no embedded software or network interface. All configuration and monitoring occur via front-panel controls and real-time LED readout. For integration into automated lab environments, optional analog voltage output (0–10 V) enables connection to data acquisition systems (e.g., LabVIEW, Delta Tau PMAC) for time-stamped temperature logging. Users performing routine thermal validation can document calibration history, alarm events, and cycle parameters manually in accordance with internal SOPs. Firmware updates are not field-upgradable; functional enhancements are delivered exclusively through certified service centers aligned with Grant Instruments’ ISO 9001:2015 quality management system.

Applications

• Thermal denaturation studies of proteins and nucleic acids
• Preparation of high-melting-point standards for DSC and TGA calibration
• Controlled drying of hygroscopic reagents and reference materials
• Accelerated stability testing per ICH Q1A(R2) guidelines
• Heating of catalysts and metal-organic frameworks prior to gas adsorption analysis
• Sample conditioning for XRD, FTIR, and Raman spectroscopy workflows
• Hot-block sterilization of small-volume tools in microbiology core facilities

FAQ

What is the maximum recommended continuous operating temperature?
The BT5D is rated for continuous operation at 400 °C; however, prolonged use above 350 °C may reduce long-term block emissivity and heater element lifespan.
Can the BT5D be used inside a Class II biosafety cabinet?
Yes—the unit generates no vapors, aerosols, or volatile organics, and its surface temperature remains below ignition thresholds for common cabinet filter materials.
Is block calibration traceable to national standards?
Grant provides factory calibration certificates (NIST-traceable) upon request; users must perform periodic verification using accredited secondary standards per ISO/IEC 17025.
Does the timer support repeat cycling?
No—the built-in timer executes a single interval; repeat sequences require external programmable logic controllers or manual reset.
What maintenance is required for long-term accuracy?
Annual inspection of block well geometry, cleaning of ventilation grilles, and verification of thermal fuse functionality are recommended per Grant’s Maintenance Schedule MS-BT5D Rev. 3.