Yarong B-260 Constant-Temperature Water Bath
| Brand | Yarong |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Product Category | Domestic |
| Model | B-260 |
| Quotation | Upon Request |
| Temperature Range | Ambient to 99 °C |
| Temperature Control Accuracy | ±1 °C |
| Bath Chamber Dimensions | 26 cm × 15 cm (L × W) |
| Heating Power | 1.0 kW |
| External Dimensions (W × D × H) | 36 cm × 29 cm × 23 cm |
| Voltage/Frequency | 220 V / 50 Hz |
| Net Weight | 5.5 kg |
Overview
The Yarong B-260 Constant-Temperature Water Bath is a precision-engineered laboratory thermal management system designed for stable, uniform heat transfer in aqueous environments. It operates on the principle of conduction-based thermal equilibrium, utilizing a fully submerged, closed-loop annular heating element embedded directly within the stainless-steel bath chamber. This configuration ensures rapid thermal response, minimal temperature gradient across the bath surface (< ±0.5 °C at steady state), and high reproducibility in time-dependent thermal protocols—critical for applications such as enzyme incubation, sample pre-warming, solvent conditioning prior to extraction or distillation, and temperature-sensitive calibration procedures.
Key Features
- Corrosion-resistant 304 stainless-steel inner chamber with PTFE-coated bottom and sidewalls, enhancing chemical compatibility and long-term durability in repeated use with aqueous buffers, saline solutions, and mild organic solvents.
- Integrated annular immersion heater delivering uniform thermal distribution without hot spots; no external heating mantles or auxiliary circulation required.
- Digital PID temperature controller with built-in platinum resistance thermometer (PT100) sensor, enabling precise setpoint adjustment in 0.1 °C increments and real-time display of actual bath temperature.
- Over-temperature protection circuit with independent mechanical cut-off switch, compliant with IEC 61010-1 safety standards for laboratory electrical equipment.
- Compact footprint (36 × 29 × 23 cm) optimized for benchtop integration alongside rotary evaporators (e.g., RE-52 series), centrifuges, and other modular lab instrumentation.
- Front-panel LED interface with intuitive push-button operation; no software installation or driver dependencies required.
Sample Compatibility & Compliance
The B-260 accommodates standard laboratory glassware including 100–1000 mL beakers, Erlenmeyer flasks, test tubes (up to 25 mm diameter), and immersion probes. Its open-bath design supports passive convection-driven heat transfer and is compatible with non-sealed vessels used in ambient-pressure thermal conditioning. While not certified for Class II biological safety or explosion-proof environments, the unit meets general-purpose laboratory safety requirements under GB/T 25108–2010 (Chinese national standard for water baths) and conforms to electromagnetic compatibility (EMC) limits per GB/T 18268.1–2010. It is routinely deployed in QC labs operating under GLP-aligned workflows where traceable temperature stability is documented via external calibrated thermometers.
Software & Data Management
The B-260 operates as a standalone analog-digital hybrid instrument with no onboard data logging, USB connectivity, or remote control capability. Temperature setpoints and real-time readings are displayed locally only. For laboratories requiring audit-ready thermal records, integration with external data acquisition systems (e.g., LabVIEW-compatible thermocouple interfaces or ISO/IEC 17025-accredited digital thermometers) is recommended. The unit does not implement FDA 21 CFR Part 11 electronic signature functionality, nor does it support networked operation—consistent with its role as a foundational, low-complexity thermal platform intended for routine, non-regulated heating tasks.
Applications
- Thermal conditioning of samples prior to HPLC injection, spectrophotometric analysis, or microbial culture preparation.
- Support heating module for Yarong RE-52CS-1 and RE-52CS-2 rotary evaporators, maintaining consistent bath temperature during solvent evaporation at reduced pressure.
- Controlled-rate warming of cryopreserved reagents, antibody solutions, and cell culture media to avoid thermal shock.
- Calibration verification of liquid-in-glass thermometers and digital probe sensors using NIST-traceable reference standards.
- Accelerated stability testing of pharmaceutical formulations under accelerated aging conditions (e.g., 40 °C/75% RH preconditioning of packaging components).
FAQ
What is the maximum usable liquid depth in the B-260 bath chamber?
The internal chamber dimensions (26 × 15 cm) accommodate up to ~6.5 L of water at safe operational fill level (recommended ≤ 5 cm below rim), ensuring adequate thermal mass and minimizing evaporation-induced drift.
Can the B-260 be used with non-aqueous fluids such as silicone oil or glycerol?
It is not recommended—only deionized water, buffer solutions, or saline are validated for use. Oil-based media may degrade the PTFE coating over time and pose fire risk if overheated beyond flash point.
Is the temperature sensor user-replaceable or field-calibratable?
The integrated PT100 sensor is factory-calibrated and sealed; recalibration requires return to authorized service center per Yarong’s maintenance protocol.
Does the unit include a lid or cover option?
No lid is supplied by default, but standard acrylic or aluminum covers with port cutouts can be sourced separately to reduce evaporation and improve thermal efficiency.
What maintenance is required for long-term reliability?
Monthly descaling with 5% citric acid solution is advised for hard-water environments; annual inspection of heater insulation resistance (>1 MΩ) using a megohmmeter is recommended for preventive maintenance.
