BOXUN SSW-420/600-2S Benchtop Constant-Temperature Water Bath

Overview

The BOXUN SSW-420/600-2S is a precision-engineered benchtop constant-temperature water bath designed for reliable thermal stabilization of samples in life science, clinical diagnostics, and industrial R&D laboratories. Operating on the principle of resistive heating combined with high-fidelity proportional-integral (PI) temperature control, this static water bath maintains stable thermal conditions without forced circulation—making it ideal for applications where sample agitation or convective disturbance must be avoided. Its operational range spans from ambient +5 °C up to 100 °C, covering critical protocols including enzyme incubation, serum warming, reagent equilibration, and material conditioning per ASTM D1505 and ISO 291 environmental conditioning standards. The unit complies with IEC 61010-1 safety requirements for laboratory electrical equipment and incorporates dual-layer thermal insulation to minimize energy consumption and external surface temperature rise.

Key Features

• High-stability PI temperature control system utilizing platinum resistance (PT100) sensing elements and low-drift analog signal conditioning circuits
• Two standard configurations: SSW-420-2S (12 L capacity, 415 × 175 × 145 mm chamber) and SSW-600-2S (32 L capacity, 600 × 290 × 190 mm chamber), both optimized for benchtop footprint efficiency
• Robust mechanical construction featuring cold-rolled steel housing with electrostatic epoxy powder coating and seamless 304 stainless steel inner tank for corrosion resistance and cleanability
• Dual-stage over-temperature protection: primary electronic cutoff at user-defined limit +2 °C deviation, backed by independent mechanical thermostat fail-safe
• Front-panel digital LED display with intuitive keypad interface for setpoint entry, real-time temperature readout, and alarm status indication
• No external pump or tubing required—designed for passive thermal equilibrium, eliminating maintenance associated with circulating systems

Sample Compatibility & Compliance

The SSW-420/600-2S accommodates standard laboratory glassware including test tubes (up to 25 mm diameter), centrifuge tubes, flasks, and Petri dishes placed directly into the water medium. Its static bath design ensures minimal mechanical stress on delicate biological specimens such as blood serum, cell suspensions, and antibody solutions—supporting CLSI EP15-A3 and USP compounding environment guidelines. All electrical components meet CE marking requirements under Directive 2014/30/EU (EMC) and 2014/35/EU (LVD). The stainless steel tank conforms to FDA-recommended materials for indirect food contact (21 CFR 178.3570), and the unit supports GLP-compliant recordkeeping when integrated with external data loggers via analog output (0–5 V DC proportional to temperature).

Software & Data Management

While the SSW-420/600-2S operates as a standalone analog-controlled instrument, its 0–5 V DC analog output port enables integration with third-party data acquisition systems (e.g., LabVIEW, MATLAB, or custom SCADA platforms) for time-stamped temperature logging. When used in regulated environments, users may configure external validation protocols aligned with IQ/OQ/PQ documentation frameworks. Though not natively 21 CFR Part 11 compliant, the device supports audit-trail-ready operation when paired with validated electronic lab notebooks (ELNs) that capture setpoint changes, alarm events, and duration of exposure—meeting ALCOA+ data integrity principles for QC/QA workflows.

Applications

• Clinical pathology labs: Warming of patient serum prior to immunoassay analysis (e.g., ELISA, chemiluminescence)
• Pharmaceutical quality control: Dissolution medium pre-conditioning per USP , stability testing per ICH Q1A(R2)
• Academic research: Enzyme kinetics studies requiring precise thermal hold between 37 °C and 65 °C
• Materials science: Polymer film annealing, viscosity reference calibration baths, and solvent evaporation rate standardization
• Industrial QA: Calibration of liquid-in-glass thermometers and digital probe sensors against NIST-traceable references

FAQ

Is the water bath suitable for oil-based media?
Yes—the stainless steel tank and heating element are chemically resistant to mineral oils and silicone fluids within the specified temperature range; however, oil use requires manual cleaning after each session to prevent residue buildup.
Does the unit support external temperature probes for independent verification?
No built-in probe port is provided, but the analog output signal allows correlation with traceable external PT100 or thermistor probes during qualification.
Can this bath be used in a GMP-regulated environment?
It meets foundational hardware requirements for GMP Annex 15; full compliance depends on site-specific validation, preventive maintenance scheduling, and integration with documented change control procedures.
What is the typical warm-up time to reach 37 °C from room temperature?
Approximately 12–15 minutes for the SSW-420-2S and 20–25 minutes for the SSW-600-2S, depending on ambient conditions and initial water volume.
Is there an option for remote monitoring or network connectivity?
Not available as standard; however, OEM-level firmware customization and RS-485 expansion modules can be arranged under separate technical agreement.