WIGGENS WD320 Multi-Function Dry Block Heater

Overview

The WIGGENS WD320 Multi-Function Dry Block Heater is a precision-engineered thermal platform designed for consistent, contact-based sample heating in analytical, clinical, and research laboratories. Unlike water baths, this dry block system eliminates evaporation, contamination, and maintenance overhead by using solid-state conductive heating through interchangeable aluminum blocks. Its core operation relies on Peltier-free resistive heating combined with high-stability PT100 temperature sensing and digital PID feedback control—ensuring thermal uniformity across the block surface within ±0.1 °C accuracy. The unit is optimized for applications requiring rapid thermal equilibration (≤25 minutes to reach 150 °C), repeatable incubation protocols, and compliance-ready operation in regulated environments.

Key Features

• Precision temperature control from 40 °C to 150 °C with ±0.1 °C resolution and accuracy, validated via integrated PT100 sensor
• Three operational modes: OFF (standby), OFF-TIME (auto-shutdown after preset duration), and WAIT-TIME (delayed activation)
• Robust anodized aluminum heating blocks—chemically resistant, thermally homogeneous, and compatible with common microtubes, vials, and reaction vessels
• Optional stainless steel insert enables dual-mode functionality: dry block heating or small-volume liquid bath operation (e.g., for calibration reference standards)
• RS232 serial interface supports integration with laboratory information management systems (LIMS) and external PC-based control software for remote parameter setting, real-time logging, and audit-trail generation
• Independent over-temperature safety cutoff at 170 °C—hardware-triggered, independent of main controller—to prevent thermal runaway under fault conditions
• Compact footprint (200 × 270 × 80 mm) and low mass (3.0 kg) facilitate benchtop deployment in space-constrained cleanrooms or QC labs

Sample Compatibility & Compliance

The WD320 accommodates a broad range of sample containers via eight interchangeable block configurations—from 64 × 0.2 mL PCR tubes to 6 × 25 mL centrifuge tubes—each engineered to minimize axial and radial thermal gradients. Blocks are manufactured to ISO 9001-certified tolerances and undergo post-machining anodization for enhanced corrosion resistance and thermal stability. The device meets IEC 61010-1:2010 safety requirements for electrical equipment used in laboratory settings. When operated with validated protocols and logged via RS232, it supports GLP/GMP documentation workflows—including traceable temperature records, user-defined setpoint history, and electronic signatures compatible with FDA 21 CFR Part 11–aligned software packages.

Software & Data Management

Via the optional WIGGENS LabControl software (compatible with Windows OS), users can configure ramp-soak profiles, export time-stamped temperature logs (.CSV), and generate PDF reports compliant with internal QA review cycles. The RS232 interface enables bidirectional communication: real-time temperature readback, setpoint updates, alarm status polling, and firmware version interrogation. All data transfers include timestamping synchronized to the host PC clock—critical for method validation under ISO/IEC 17025 or USP . Audit trails capture operator ID, parameter changes, and session start/end times—fully configurable for multi-user lab environments.

Applications

• Enzyme inactivation and heat denaturation studies in molecular biology workflows
• Standardized sample pre-warming prior to HPLC injection or GC autosampler loading
• Calibration of thermocouples, RTDs, and digital thermometers using NIST-traceable reference blocks
• Controlled thawing of cryopreserved cell lines and reagents without condensation risk
• Accelerated stability testing of pharmaceutical formulations per ICH Q1A(R3) guidelines
• Pre-heating of solvents and reagents in synthetic chemistry protocols requiring precise thermal input

FAQ

Is the WD320 suitable for use in GMP-regulated environments?
Yes—when paired with validated software and documented SOPs, its RS232 interface, hardware safety cutoff, and traceable temperature logging support compliance with EU Annex 11 and FDA 21 CFR Part 11.
Can the stainless steel bath insert be used simultaneously with an aluminum heating block?
No—the stainless steel insert replaces the standard aluminum block; it functions as a standalone shallow bath (max depth ~45 mm) and is not stackable.
What is the maximum recommended load per block position?
For optimal thermal transfer and longevity, do not exceed 25 g per well; heavier loads may reduce response time and uniformity.
Does the WD320 require periodic calibration verification?
Yes—users should verify accuracy annually using a calibrated reference thermometer (e.g., ASTM E74-compliant probe) at three points across the operating range (40 °C, 100 °C, 150 °C).
Are replacement blocks supplied with calibration certificates?
Standard blocks ship without individual certificates; however, WIGGENS offers optional UKAS-accredited calibration services upon request—with full uncertainty budgets and traceability to national standards.