Julabo SW198 Large-Capacity Programmable Thawing Bath with Orbital Shaking

Overview

The Julabo SW198 is a large-capacity, programmable thawing bath engineered specifically for controlled, reproducible cryopreserved cell recovery in compliance-critical biopharmaceutical and clinical laboratory environments. Unlike conventional water baths, the SW198 integrates precision temperature control with orbital shaking and validated process logic—functioning as a dedicated cryo-thawing platform rather than a generic thermal bath. Its core operation relies on Julabo’s proprietary PID-controlled heating system coupled with a robust industrial PLC architecture, enabling dynamic thermal ramping, dwell timing, and agitation synchronization across defined thawing protocols. Designed to meet the stringent requirements of cell therapy manufacturing, the SW198 supports standardized reconstitution of cryopreserved biologicals stored in commercial cryobags (e.g., CryoBag®, BioSafe®, Nunc™), ensuring consistent thermal transfer kinetics and minimizing thermal shock or ice recrystallization during phase transition.

Key Features

• Industrial-grade Siemens or equivalent PLC controller with 7-inch high-brightness touchscreen interface for full parameter programming—including temperature setpoint, ramp rate, hold time, shaking frequency (20–100 rpm), amplitude selection (15 mm or 25 mm), and dual-stage high/low temperature alarms.
• Validatable thermal performance: ±0.1 °C stability over full operating range (ambient +5 °C to 40 °C) with 0.1 °C display resolution and traceable calibration support per ISO/IEC 17025 guidelines.
• Dual-bag capacity: Simultaneous thawing of two standard cryobags measuring up to 70 × 55 × 12.8 cm, accommodating volumes from 25 mL to 12 L per bag—optimized for both R&D-scale pilot batches and GMP-aligned production runs.
• Integrated safety architecture: Automatic shutdown triggered by overtemperature (>42 °C), low fluid level detection, motor overload protection, and real-time fault logging with timestamped event history.
• Thermal uniformity-enhancing design: Optimized heater placement, stainless-steel tank construction (AISI 316), and forced-convection circulation ensure ≤0.3 °C spatial deviation across the full 50–200 L working volume.
• Optional thermal printer module provides hard-copy audit trail of all operational parameters—including start/stop times, actual vs. setpoint profiles, alarm events, and user ID—supporting FDA 21 CFR Part 11 readiness when paired with electronic signature workflows.

Sample Compatibility & Compliance

The SW198 is validated for use with industry-standard cryopreservation containers including PVC-, polyolefin-, and ethylene vinyl acetate (EVA)-based cryobags from major suppliers (e.g., Thermo Fisher Scientific, MacoPharma, Sartorius Stedim Biotech). Its gentle orbital motion (non-turbulent, laminar displacement) prevents membrane shear stress while promoting uniform convective heat transfer across bag surfaces. The system conforms to essential regulatory expectations for thawing process validation under ICH Q5D, USP , and EMA Guideline on Quality, Non-clinical and Clinical Aspects of Advanced Therapy Medicinal Products. All firmware and control logic are designed to support GLP/GMP documentation requirements, including version-controlled software, change management logs, and user-access-level permissions (admin/operator/viewer).

Software & Data Management

While the SW198 operates autonomously via its embedded PLC, it supports RS485 Modbus RTU and optional Ethernet/IP connectivity for integration into centralized laboratory information management systems (LIMS) or MES platforms. Process data—including real-time temperature, RPM, alarm status, and cycle completion signals—can be streamed to external SCADA or historian databases. Julabo provides optional PC-based configuration software (SW198 ConfigTool v2.x) for offline protocol development, backup/restore of method files, and generation of IQ/OQ test scripts aligned with ASTM E2500 and Annex 11 principles. Audit trails are retained onboard for ≥30 days and exportable via USB drive in CSV format.

Applications

• Controlled-rate thawing of hematopoietic stem cells (HSCs), mesenchymal stromal cells (MSCs), and CAR-T products in compliance with SOP-driven release testing.
• Process development and scale-up studies for cryopreserved viral vectors (AAV, lentivirus) requiring precise thermal history documentation.
• QC release testing of biobanked primary human tissues and organoids where batch-to-batch thaw consistency directly impacts downstream assay fidelity.
• Support of ATMP manufacturing workflows subject to MHRA, PMDA, or Health Canada regulatory review—particularly where thawing is designated a Critical Process Parameter (CPP).
• Reproducible reconstitution of lyophilized therapeutics where controlled hydration kinetics influence aggregate formation and potency.

FAQ

Is the SW198 compliant with FDA 21 CFR Part 11 for electronic records and signatures?

Yes—when deployed with optional electronic signature modules and configured per Julabo’s Part 11 Implementation Guide, the system supports role-based access control, audit trail integrity, and record retention policies required for regulated environments.
Can the SW198 be calibrated and certified according to ISO/IEC 17025?

Yes—Julabo-certified service engineers perform on-site calibration using NIST-traceable reference probes; full certification reports including uncertainty budgets are provided upon request.
What maintenance is required to sustain thermal accuracy over time?

Annual verification of temperature uniformity and stability is recommended; routine cleaning of the stainless-steel bath and inspection of fluid level sensors constitute standard preventive maintenance.
Does the SW198 support custom thawing algorithms beyond the built-in protocols?

Yes—advanced users may define multi-step ramp-hold-cool sequences with independent agitation control per phase using the PLC programming interface or ConfigTool software.
Is remote monitoring possible without direct network integration?

Basic status monitoring (temperature, RPM, alarm state) is available via optional analog 4–20 mA output signals compatible with legacy building management systems (BMS) or panel meters.