CZGY HH-6 Digital Display Single-Row Water Bath

Overview

The CZGY HH-6 Digital Display Single-Row Water Bath is an engineered solution for precise, stable thermal incubation of samples in research laboratories, quality control environments, and academic teaching facilities. Operating on the principle of convection-based liquid heat transfer, it maintains uniform temperature distribution across six independent wells via a thermostatically regulated water medium. Designed for applications requiring gentle, non-contact heating—including enzymatic reactions, cell culture preparation, reagent equilibration, sample thawing, and solvent bath conditioning—the HH-6 delivers reproducible thermal performance within a range of ambient temperature to 100 °C. Its stainless steel inner tank ensures chemical resistance and long-term integrity under repeated exposure to aqueous solutions, while the epoxy-coated cold-rolled steel housing provides mechanical durability and corrosion resistance in standard laboratory environments.

Key Features

• Digital PID temperature controller with intuitive push-button interface (SET, ↑, ↓) for accurate setpoint entry and real-time display
• ±0.5 °C temperature stability across all wells at steady state, verified per ISO 17025 traceable calibration protocols
• Six evenly spaced wells (each Ø120 mm), configured in a linear single-row layout to optimize benchtop footprint and workflow ergonomics
• Robust 1500 W heating system with over-temperature cutoff and thermal fuse protection—compliant with IEC 61010-1 safety requirements
• Grounded 220 V AC input with integrated earth leakage safeguard; meets national electrical safety standards for laboratory equipment
• Front-panel LED display with high-contrast numeric readout enables rapid verification of current and set temperatures under varied lighting conditions

Sample Compatibility & Compliance

The HH-6 accommodates standard laboratory glassware including test tubes (10–25 mm OD), centrifuge tubes, beakers, and flasks up to 500 mL volume per well. Its open-bath configuration supports immersion-based thermal equilibration without lid interference, facilitating easy access during time-sensitive procedures. The unit conforms to general-purpose laboratory equipment safety classifications under GB 4793.1–2007 (Chinese equivalent of IEC 61010-1). While not certified for use in GMP or GLP-regulated production environments without additional validation, it is routinely employed in pre-clinical research, method development, and educational labs where documented thermal consistency is required. Users performing regulated work may implement supplementary IQ/OQ protocols to verify temperature uniformity (±0.8 °C across wells) and stability (±0.3 °C over 30 min) per ASTM E2252–19 guidelines.

Software & Data Management

The HH-6 operates as a standalone analog-digital hybrid instrument with no embedded software or network connectivity. Temperature control logic resides in a discrete microcontroller implementing a tunable PID algorithm with user-accessible parameters: proportional band (P), cycle time (T), and anticipatory offset (E). These settings are adjustable via front-panel key sequence (3-second SET press) to accommodate varying thermal loads and ambient conditions. Although the device does not support data logging or remote monitoring natively, its analog output signal (0–5 V DC corresponding to 0–100 °C) can be interfaced with external DAQ systems for continuous recording. For audit-trail compliance in regulated workflows, users are advised to maintain manual logbooks documenting daily operational checks, calibration dates, and observed deviations—consistent with FDA 21 CFR Part 11 principles for paper-based records.

Applications

• Pre-warming of culture media and buffers prior to cell passaging or microbiological assays
• Controlled hydrolysis and saponification reactions in analytical chemistry workflows
• Thermal conditioning of viscosity standards and reference oils prior to rheometer calibration
• Incubation of ELISA plates and immunoassay reagents at defined reaction temperatures
• Stabilization of enzymatic activity during kinetic studies requiring narrow thermal windows
• Supporting ASTM D92 (Cleveland Open Cup), D93 (Pensky-Martens), and ISO 2719 flash point testing preparations

FAQ

What is the maximum recommended water level for safe operation?
Fill the bath so that the water surface remains at least 20 mm above the top of the heating elements—never allow water to exceed 90% of internal cavity height to prevent boil-over during prolonged operation at 100 °C.
Can the HH-6 be used with solvents other than water?
No. This unit is designed exclusively for aqueous media. Use of organic solvents, oils, or corrosive liquids voids warranty and poses fire/explosion hazards due to lack of vapor containment or explosion-proof construction.
Is routine calibration required, and how often?
Yes. We recommend quarterly verification using a NIST-traceable platinum RTD probe placed centrally in one well, with full recalibration if deviation exceeds ±0.5 °C at any setpoint between 37 °C and 85 °C.
Does the HH-6 support external temperature probes for chamber monitoring?
It does not include a built-in probe port; however, the analog voltage output (0–5 V) can be correlated to bath temperature using the factory calibration curve provided in the technical manual.
What maintenance steps ensure long-term reliability?
Drain and dry the tank after each use; clean interior surfaces weekly with mild detergent and deionized water; inspect heating element insulation annually; replace silicone gasket seals every 24 months in high-humidity environments.