IKA Dry Block Heater 2 Metal Bath

Overview

The IKA Dry Block Heater 2 is a precision-engineered dual-block metal bath designed for stable, uniform, and traceable temperature control of small-volume samples in life science, clinical diagnostics, and quality control laboratories. Utilizing solid aluminum heating blocks with high thermal mass and optimized heat distribution geometry, the instrument operates on resistive heating principles coupled with closed-loop PID temperature regulation. Its core functionality centers on maintaining setpoint stability within ±0.2 °C across critical biological temperature ranges—including 37 °C (mammalian cell culture), 60 °C (enzyme inactivation), and 95 °C (DNA denaturation)—without requiring water or oil baths. The integrated PT-1000 sensor interface (DIN 12878 standard) enables direct sample-in-tube temperature monitoring, eliminating air-gap errors common in ambient-sensed dry baths. This architecture ensures reproducibility required for GLP-compliant workflows and method validation under ISO/IEC 17025 frameworks.

Key Features

• Dual independent aluminum heating blocks (96 × 152 mm each) for simultaneous processing of heterogeneous sample formats
• High-resolution digital display with 1 °C resolution and real-time temperature readout
• Precise PID-controlled heating delivering ±0.2 °C stability at 37 °C and 60 °C (per IKA factory calibration certificate)
• Programmable timer with dual modes: countdown (1 s – 99 h 59 min) and elapsed time tracking
• Fixed safety cut-off at 150 °C prevents thermal runaway; audible end-of-cycle alert confirms protocol completion
• DIN 12878-compliant external probe port supporting certified PT-1000 sensors for sample-core temperature validation
• Error-code diagnostics (e.g., E1 = sensor fault, E2 = overtemperature) enable rapid troubleshooting without service dispatch
• Compact footprint (151 × 73 × 304 mm) and lightweight design (1.3 kg) facilitate benchtop integration in laminar flow hoods or biosafety cabinets

Sample Compatibility & Compliance

The Dry Block Heater 2 accommodates standardized labware via interchangeable heating blocks—compatible with 0.2 mL PCR tubes, 0.5 mL microtubes, 1.5/2.0 mL Eppendorf-style tubes, 96-well PCR plates (full- or half-block configuration), Greiner bio-one polypropylene tubes, quartz cuvettes (10 mm path), and standard spectrophotometric cells. All block geometries maintain radial thermal symmetry to minimize inter-well variance (<0.3 °C across 96-well format per IKA verification report). The device complies with DIN EN 60529 (IP21 ingress protection), IEC 61010-1 (safety requirements for electrical equipment), and EU Directive 2014/30/EU (EMC). While not FDA 21 CFR Part 11–certified out-of-box, its deterministic timer logging, non-volatile error memory, and fixed safety limits support audit-ready documentation when integrated into validated SOPs.

Software & Data Management

This standalone instrument operates without proprietary software or connectivity interfaces (no RS232 or USB ports), prioritizing operational simplicity and electromagnetic compatibility in sensitive instrumentation environments. Temperature setpoints, timer values, and safety thresholds are retained in non-volatile memory during power cycles. All thermal events—including activation time, duration, final setpoint, and triggered error codes—are stored locally and accessible via front-panel navigation. For regulated environments, users may pair the unit with external data loggers (e.g., calibrated thermocouple-based recorders per ASTM E74) to generate 21 CFR Part 11–compliant audit trails. IKA provides full calibration documentation (traceable to DKD/DAkkS standards) and offers optional IQ/OQ protocols aligned with GMP Annex 15 requirements.

Applications

• Thermal denaturation of nucleic acids in PCR setup and hot-start enzyme activation
• Controlled incubation of immunoassays (ELISA, lateral flow), antigen-antibody binding, and Western blot stripping
• Enzymatic reaction kinetics at defined temperatures (e.g., restriction digests, ligations, phosphorylations)
• Cell culture pre-warming of media, sera, and dissociation reagents at 37 °C
• Melting point determination of pharmaceutical excipients and polymer standards (ASTM D3418)
• Blood urea nitrogen (BUN) assays and coagulation testing requiring precise 37 °C incubation
• In situ hybridization (ISH) probe denaturation and hybridization steps
• Quality control of agarose/gelatin-based media solidification and liquefaction tests

FAQ

Does the Dry Block Heater 2 support external temperature logging?
Yes—via its DIN 12878 port, it accepts calibrated PT-1000 probes connected to third-party data loggers compliant with ASTM E74 or ISO 17025.
Can both blocks operate at different temperatures simultaneously?
No—the unit maintains a single setpoint across both blocks; independent dual-zone control is not supported.
What is the maximum recommended load per block?
Up to 24 × 0.2 mL PCR tubes or 1 × 96-well plate per block; exceeding this may degrade thermal uniformity beyond ±0.3 °C.
Is routine recalibration required?
IKA recommends annual verification against a NIST-traceable reference thermometer; factory calibration is valid for 12 months under normal use conditions.
How does the safety cut-off function during extended unattended operation?
The 150 °C hardware limiter operates independently of the main controller and interrupts power to heating elements immediately upon threshold breach—no firmware dependency.