CZGY HH-W600 Digital Display Triple-Function Water Bath

Overview

The CZGY HH-W600 Digital Display Triple-Function Water Bath is a benchtop, non-circulating constant-temperature bath engineered for precise thermal control in routine laboratory applications including solvent distillation, sample drying, solution concentration, and temperature-sensitive chemical or biological incubation. Unlike recirculating baths that rely on forced convection for uniformity, the HH-W600 employs passive thermal equilibrium within its stainless steel tank—optimized for stability rather than dynamic mixing. Its three independent 120-mm-diameter wells enable parallel processing of multiple samples under identical setpoint conditions, making it suitable for QC labs, teaching laboratories, and preparatory workflows where reproducibility across discrete vessels is prioritized over ultra-high spatial uniformity. The unit operates via an immersed sheathed heating element positioned centrally in the water column, delivering rapid thermal response and energy-efficient operation at up to 1500 W. Temperature is regulated using a digital PID controller with ±0.5 °C accuracy across its full 0–100 °C range, referenced to a calibrated NTC sensor embedded near the well base.

Key Features

• Triple-well configuration (3 × Ø120 mm) for simultaneous multi-sample treatment without cross-contamination
• Digital PID temperature controller with LED display, adjustable in 0.1 °C increments and auto-tuning capability
• Robust dual-layer construction: 304 stainless steel inner tank (welded, seamless joints) and powder-coated cold-rolled steel outer casing for corrosion resistance and mechanical durability
• Immersed tubular heating element with over-temperature cut-off (mechanical thermal fuse) and low-water-level safety interlock
• No external pump or tubing required—ideal for environments where maintenance simplicity and fluid containment are critical
• Compliant with IEC 61010-1:2010 safety standards for electrical equipment for measurement, control, and laboratory use

Sample Compatibility & Compliance

The HH-W600 accommodates standard laboratory glassware—including 1000 mL beakers, 500 mL Erlenmeyer flasks, and cylindrical digestion tubes—within each well. It supports aqueous media exclusively; oil or organic solvents are not recommended due to lack of vapor containment and absence of explosion-proof design. The bath meets basic GLP documentation requirements for temperature logging when paired with external data loggers (e.g., compliant with ASTM E2877-22 for thermal validation of liquid baths). While not certified for GMP-regulated production environments, its stable thermal profile and traceable calibration support method validation per ISO/IEC 17025:2017 in testing laboratories. CE marking is not applicable as the device is manufactured for domestic Chinese market compliance (GB 4793.1–2007), though it satisfies fundamental electrical safety prerequisites for international educational and research deployment.

Software & Data Management

The HH-W600 operates as a standalone analog-digital hybrid instrument with no embedded firmware, network interface, or proprietary software. All parameter setting and monitoring occur locally via front-panel keypad and 4-digit LED display. For auditability and process traceability, users may integrate optional third-party USB or RS-232 data loggers (e.g., Omega OM-DAQPRO-5300 series) connected to the analog output signal (0–5 V DC proportional to measured temperature). Such configurations support 21 CFR Part 11-compliant electronic records when deployed with validated acquisition software and user access controls. Calibration certificates (NIST-traceable) are available upon request and include as-found/as-left data per ISO/IEC 17025 procedures.

Applications

• Controlled evaporation of volatile solvents during sample preparation prior to HPLC or GC analysis
• Enzyme reaction incubation at fixed temperatures (e.g., 37 °C for mammalian cell lysates)
• Standardization of viscosity reference oils in quality control workflows
• Pre-heating reagents to minimize thermal shock during titration or colorimetric assays
• Supporting ASTM D92 (flash point by Cleveland Open Cup) and USP <1151> dissolution apparatus water jacketing (when used as auxiliary thermal source)
• Teaching laboratory demonstrations of phase-change kinetics and Arrhenius behavior

FAQ

Is the HH-W600 suitable for oil bath applications?
No. The unit is designed exclusively for aqueous media. Oil immersion exceeds safe operating limits and compromises heater lifespan and safety interlocks.
Can the temperature be logged automatically?
Not natively. However, the analog voltage output enables integration with external data loggers compatible with 0–5 V DC input and configurable sampling intervals.
What is the minimum safe water level?
Water must fully submerge the heating element—approximately 50 mm above the tank base. Operation below this level triggers automatic shutdown via the low-water safety switch.
Does the unit comply with FDA 21 CFR Part 11?
The device itself does not meet Part 11 requirements; however, validated external logging systems can establish compliant electronic records when implemented with appropriate SOPs and audit trails.
Are calibration services included?
Factory calibration is performed pre-shipment. NIST-traceable calibration certificates with uncertainty budgets are available as a chargeable add-on service.