CZGY HH-YRC008 Circulating Magnetic Stirring Water Bath

Overview

The CZGY HH-YRC008 Circulating Magnetic Stirring Water Bath is an integrated laboratory thermal platform engineered for precise temperature maintenance and homogeneous sample agitation in applications requiring simultaneous heating, circulation, and mechanical mixing. Unlike conventional static water baths, the HH-YRC008 employs a built-in centrifugal circulation pump to ensure uniform thermal distribution throughout the 110 L stainless steel bath chamber—minimizing axial and radial temperature gradients (<±0.5°C stability) and eliminating localized hot spots. Its dual-function architecture combines PTC-heated thermal regulation (ambient +5°C to 100°C) with a digitally controlled magnetic stirring system capable of continuous operation from standstill up to 2000 rpm. Designed for compatibility with glassware up to 20 L (e.g., round-bottom flasks, reactors, and condensation assemblies), it serves as a stable thermal environment for reflux, solvent evaporation, enzymatic incubation, dissolution testing, and preparative chemistry workflows where both thermal consistency and dynamic mixing are critical.

Key Features

• Full 304 stainless steel construction — corrosion-resistant tank and outer housing for long-term durability in aqueous and mildly aggressive chemical environments
• Integrated internal recirculation pump — ensures rapid thermal equilibration and <±0.5°C spatial uniformity across the entire bath volume
• Dual digital control system — independent LCD interfaces for temperature (0.1°C resolution) and stirrer speed (rpm), each with programmable timers
• High-power 4500 W heating element — enables rapid ramp-up to 100°C even under full load; protected by over-temperature cut-off and dry-run safety logic
• Brushless DC magnetic drive — delivers consistent torque across the full 0–2000 rpm range with low electromagnetic interference and minimal heat transfer to the sample
• Three-mode timer functionality — supports time-limited heating, timed stirring, or synchronized dual-timer operation (e.g., preheat + stir sequence)
• 16 A dedicated power input — compliant with industrial-grade laboratory circuit specifications; includes grounded IEC 60320 C19 inlet

Sample Compatibility & Compliance

The HH-YRC008 accommodates standard laboratory vessels including borosilicate glass flasks (up to 20 L), jacketed reactors, and immersion-cooled probes. Its open-bath geometry permits direct insertion of thermocouples, pH electrodes, or sampling lines without obstruction. The unit conforms to IEC 61010-1:2010 for electrical safety in laboratory equipment and meets IP20 ingress protection requirements. While not certified for explosion-proof or Class I Div 1 environments, its 304 SS construction and absence of external ventilation grilles make it suitable for general-purpose chemical labs operating under ISO/IEC 17025-accredited quality systems. Temperature calibration traceability follows NIST-traceable standards; routine verification aligns with ASTM E1137/E1137M for liquid-bath performance assessment.

Software & Data Management

The HH-YRC008 operates via embedded firmware with no external PC dependency. All operational parameters—including setpoints, real-time values, timer status, and fault logs—are retained on the onboard EEPROM and displayed via the high-contrast monochrome LCD. Though not equipped with USB or Ethernet connectivity, the device supports manual audit trail generation through timestamped parameter recording (user-documented). For laboratories requiring electronic records compliant with FDA 21 CFR Part 11 or GLP/GMP, integration with external data loggers (e.g., Omega OM-DAQPRO or Testo 176 T4) is facilitated via analog 0–5 V output (optional add-on module). Firmware updates are performed locally using a proprietary service port; version history and calibration coefficients are stored in non-volatile memory.

Applications

• Controlled-temperature synthesis — maintaining stoichiometric reaction kinetics during multi-hour reflux or Grignard preparations
• Dissolution testing per USP — providing stable thermal conditions for paddle/basket apparatus calibration and validation
• Biochemical incubation — supporting enzyme assays, antigen-antibody binding studies, and cell lysis protocols requiring gentle agitation at physiological temperatures
• Solvent recovery and concentration — enabling efficient rotary evaporation support with matched thermal inertia and reduced bumping risk
• Calibration of temperature-sensitive sensors — serving as a stable reference source for thermistor, RTD, and infrared thermometer verification
• QC/QA stability studies — used in conjunction with environmental chambers for accelerated aging protocols where liquid-phase thermal coupling is required

FAQ

Does the HH-YRC008 support external temperature probe feedback for PID refinement?
No — temperature regulation relies solely on the built-in PT100 sensor located near the heater base. External probe input is not supported in standard configuration.
Can the stirring function operate independently of heating?
Yes — the magnetic stirrer and heating circuits are electrically isolated; either can be activated or deactivated separately via the front-panel controls.
Is the bath fluid level sensor compatible with oils or high-viscosity heat-transfer fluids?
The unit is rated exclusively for water and aqueous glycol solutions. Use with silicone oil or mineral oil requires prior validation of pump seal compatibility and thermal derating; not recommended without manufacturer consultation.
What maintenance intervals are recommended for the circulation pump and stirrer motor?
Under normal use (8 h/day, 5 days/week), inspect pump impeller clearance and stir bar alignment every 6 months; lubricate stirrer shaft bearings annually using food-grade silicone grease.
Does the device include factory calibration documentation?
Each unit ships with a Certificate of Conformance and a temperature uniformity test report measured at three points (center, corner, mid-wall) at 37°C and 75°C.