Grant BT5D High-Temperature Block Digestion System
| Origin | UK |
|---|---|
| Manufacturer Type | Distributor |
| Origin Category | Imported |
| Model | BT5D |
| Price | Upon Request |
Overview
The Grant BT5D High-Temperature Block Digestion System is a precision-engineered electric heating digestion instrument designed for controlled, reproducible thermal sample preparation in analytical and quality control laboratories. Operating on the principle of conductive heat transfer via a solid aluminum heating block, the BT5D delivers stable, uniform thermal energy to digestion vessels—enabling complete organic matrix decomposition, acid digestion of environmental or biological samples, and pre-digestion conditioning prior to ICP-OES, ICP-MS, or AAS analysis. Its operational range extends from ambient +10 °C up to 400 °C, making it suitable for demanding applications requiring elevated thermal stability, such as silicate fusion support, polymer ashing, and high-boiling-point acid (e.g., H₂SO₄, HClO₄) digestions. The system complies with fundamental laboratory safety expectations for enclosed heating devices and is certified for safe operation inside fume hoods and laminar flow safety cabinets.
Key Features
- Microprocessor-controlled temperature regulation with LED digital display and ±1 °C setting resolution
- Precise ramp rate control down to 0.1 °C/min, enabling programmable thermal profiles for method optimization
- Programmable timer spanning 1–999 minutes, supporting unattended operation with automatic shut-off
- Dual-configurable aluminum heating blocks: BT5D-16 accommodates thirty-eight 16 mm OD test tubes per block; BT5D-26 holds twenty-two 26 mm OD tubes
- Independent overtemperature protection circuitry with user-adjustable cut-off threshold
- Thermal stability of ±0.5 °C at temperatures ≤300 °C; uniformity maintained within ±2 °C at 200 °C, ±3 °C at 300 °C, and ±4 °C at 400 °C
- 750 W power input with 230 V AC, 50/60 Hz supply compatibility (CE-marked)
Sample Compatibility & Compliance
The BT5D supports standard borosilicate glass, quartz, and PTFE-lined digestion tubes rated for continuous exposure up to 400 °C. Its open-block architecture allows direct visual monitoring and easy insertion/removal of vessels without mechanical interference. The unit meets general requirements for ISO/IEC 17025-accredited laboratories regarding equipment qualification (IQ/OQ), including documented thermal mapping procedures for block uniformity verification. While not intrinsically compliant with FDA 21 CFR Part 11, its timer and temperature logging capabilities—when paired with external data acquisition systems—support GLP/GMP-aligned record-keeping practices. No hazardous emissions are generated during operation, satisfying EN 61000-6-3 (EMC emission limits) and workplace ventilation standards under EN 14175-3.
Software & Data Management
The BT5D operates as a standalone hardware platform with no embedded software stack or network interface. All configuration—including setpoint, ramp rate, hold time, and overtemperature limit—is performed locally via front-panel membrane keys and displayed on a high-contrast LED screen. For traceable data capture, users may integrate optional external USB or RS-232 data loggers compatible with LabVIEW, MATLAB, or custom Python-based acquisition scripts. Temperature profiles can be exported for audit trails in accordance with internal SOPs or regulatory frameworks requiring retention of raw instrument parameters (e.g., USP , ASTM D5291).
Applications
- Acid digestion of soils, sediments, sludges, and plant tissues using HNO₃/HF/HClO₄ mixtures
- Pre-concentration and charring steps in EPA Method 3050B, 3051A, and 3052 workflows
- Residue ashing for total solids quantification per AOAC 971.22 and ISO 2171
- Controlled pyrolysis of polymers and composites for elemental residue analysis
- Calibration standard preparation involving high-temperature solvent evaporation or melt homogenization
- Support heating for reflux condensation setups in gravimetric or volumetric sample prep
FAQ
What is the maximum recommended operating temperature for continuous use?
The BT5D is rated for continuous operation at 400 °C, provided appropriate vessel materials (e.g., quartz or high-purity PTFE) and adequate ventilation are employed.
Can the BT5D be used with Teflon digestion vessels?
Yes—vessels lined with PTFE or constructed entirely from PFA/PTFE rated for >400 °C are compatible; however, users must verify manufacturer-specified thermal limits for each vessel type.
Is calibration certificate included with shipment?
No factory calibration certificate is supplied by default; however, Grant Instruments provides NIST-traceable calibration services upon request, aligned with ISO/IEC 17025 requirements.
Does the BT5D support multi-step temperature programming?
No—the controller supports single-setpoint operation with linear ramping and fixed hold time; complex multi-segment profiles require external programmable controllers.
What maintenance is required to ensure long-term thermal accuracy?
Annual verification of block uniformity and sensor drift is recommended using calibrated reference thermometers; cleaning of the aluminum block surface with non-abrasive ethanol wipes prevents thermal resistance buildup.
