IKA DRYBLOCKHEATER 4 S025 Metal Block Heater

Overview

The IKA DRYBLOCKHEATER 4 S025 is a precision-engineered metal block heater designed for reproducible, contact-based thermal control of small-volume samples in life science, clinical diagnostics, and analytical laboratories. Unlike water baths or heating mantles, this dry block system employs solid aluminum heating blocks with precisely machined wells to deliver rapid, uniform, and contamination-free thermal transfer via conduction. Its core operating principle relies on Peltier-independent resistive heating combined with high-resolution digital PID control and real-time feedback from an integrated or externally connected PT1000 platinum resistance thermometer—ensuring traceable temperature regulation per DIN EN 60751 Class A specifications. The device supports four independent heating blocks, each thermally isolated yet simultaneously controllable, making it suitable for parallel sample processing under identical thermal conditions. With a maximum setpoint of 120 °C and a safety-limited cut-off at 150 °C, the unit complies with IEC 61010-1 for laboratory electrical equipment safety.

Key Features

• Four independently configurable aluminum heating blocks with standardized well geometries (compatible with 0.2 mL PCR tubes, 0.5 mL microtubes, 1.5/2.0 mL Eppendorf-style tubes, 96-well plates, cuvettes, and Greiner-certified vessels)
• Digital LED display with simultaneous readout of setpoint, actual block temperature, and elapsed or countdown timer
• External PT1000 temperature sensor (included, stainless steel probe, 60 mm immersion depth) enables direct sample-in-tube temperature monitoring—critical for kinetic assays requiring true solution-phase thermal fidelity
• Programmable timer with dual-mode functionality: countdown mode (1 s – 99 h 59 min) for endpoint-driven protocols; elapsed time mode for process documentation and GLP-compliant recordkeeping
• DIN 12878-compliant sensor interface ensures compatibility with third-party calibrated PT1000 probes for metrological traceability
• Fixed overtemperature safety circuit (150 °C) operates independently of main controller logic, satisfying risk-mitigation requirements under ISO/IEC 17025 and FDA 21 CFR Part 11 Annex 11 environments
• IP21-rated enclosure provides protection against vertically falling drips and solid objects ≥12.5 mm—suitable for standard laboratory benchtop use without additional housing

Sample Compatibility & Compliance

The DRYBLOCKHEATER 4 S025 accommodates common labware without adapters: single tubes (0.2–2.0 mL), strip tubes, 8- and 12-tube racks, 96-well microplates (flat-bottom or PCR-grade), quartz and plastic cuvettes (10 mm path length), and cylindrical vials up to 16 mm diameter. All heating blocks are CNC-machined from aerospace-grade anodized aluminum to ensure long-term dimensional stability and thermal homogeneity. The unit meets electromagnetic compatibility (EMC) requirements per EN 61326-1 and safety standards per EN 61010-1:2010. Its temperature performance is validated per DIN 12878 and referenced against DIN EN 60751 for sensor accuracy—supporting audit readiness in GMP, CLIA, and ISO 15189-accredited facilities. No consumables or fluids are required; maintenance is limited to periodic verification using NIST-traceable reference thermometers.

Software & Data Management

While the DRYBLOCKHEATER 4 S025 operates as a standalone instrument with no embedded software stack or USB/Bluetooth connectivity, its analog-digital architecture supports integration into regulated workflows through external data logging systems. The real-time temperature output (via optional analog voltage signal module) and discrete timer status signals can be interfaced with PLCs or validated LIMS platforms. All parameter settings—including setpoint, dwell time, and sensor selection—are retained after power cycling. The device generates no electronic records internally but provides unambiguous visual and audible end-of-timer alerts (audible beep + LED flash), enabling manual entry into bound lab notebooks or ELN systems with full ALCOA+ compliance when paired with procedural controls.

Applications

This heater serves as a critical thermal platform across multiple standardized protocols: DNA denaturation and annealing steps in PCR setup; enzyme kinetics assays requiring precise incubation at 37 °C or 60 °C; antigen-antibody binding in ELISA and Western blotting; blood urea nitrogen (BUN) and coagulation testing (e.g., fibrinogen clotting time); microbial media melting and pour-plating; in situ hybridization (ISH) pre-treatment steps; and pharmaceutical excipient thermal stability screening. Its ±0.2 K uniformity at physiological temperatures and <5 K/min ramp rate support tightly controlled thermal transitions essential for reproducible assay development and QC release testing.

FAQ

Does the DRYBLOCKHEATER 4 S025 support external data logging?
Yes—when equipped with the optional analog output module (sold separately), it delivers a 0–10 V signal proportional to block temperature for connection to chart recorders or SCADA systems.
Can the unit maintain temperature stability during prolonged incubations?
Yes—thermal drift is limited to ±0.2 °C at 37 °C over 24 hours under stable ambient conditions (20–25 °C, <60 % RH), verified per IKA internal calibration protocol DBH-TP-003.
Is the PT1000 sensor included calibrated and certified?
The supplied PT1000 sensor is factory-tested and documented with a manufacturer’s test certificate (not NIST-traceable by default); users requiring metrological traceability must arrange third-party calibration.
What is the expected service life of the heating blocks?
Under normal usage (≤8 h/day, ≤120 °C continuous), aluminum blocks retain dimensional integrity and thermal performance for ≥10 years; no scheduled replacement intervals are defined in the maintenance manual.
Are replacement blocks available for non-standard tube formats?
Yes—IKA offers >20 certified block configurations (including deep-well, low-profile, and custom-drilled variants) under part numbers accessible via the official IKA spare parts portal.