Prima YB8/YB12/YB26 Precision Water Bath Circulator

Overview

The Prima YB8/YB12/YB26 Precision Water Bath Circulator is an engineered thermal management platform designed for reproducible, stable temperature control in analytical, biochemical, and quality control laboratories. Utilizing a closed-loop digital PID temperature regulation system coupled with an integrated internal circulation pump, the unit maintains precise thermal homogeneity across the entire bath volume—critical for applications such as enzyme kinetics, cell culture incubation, sample equilibration prior to HPLC or viscometry, and calibration of temperature-sensitive probes. Unlike basic immersion heaters, the YB series incorporates active refrigeration-assisted heating (refrigerated-heating type), enabling rapid recovery after load changes and operation at temperatures just above ambient—eliminating reliance on external chillers for sub-ambient stability. Its stainless steel construction ensures long-term corrosion resistance in aqueous and mild solvent environments, while its compact footprint and standardized 220–240 V AC input facilitate integration into ISO 17025-accredited labs and GLP-compliant workflows.

Key Features

• Digital PID temperature controller with real-time feedback loop for dynamic response to thermal load variations
• Internal recirculation pump ensuring uniform temperature distribution (±0.1°C stability) throughout the bath chamber
• Stainless steel tank and housing—electropolished interior surface minimizes biofilm adhesion and simplifies cleaning validation per FDA and EU GMP Annex 1 guidelines
• Multi-layer safety architecture: dry-run protection, overtemperature cut-off (hardware-based independent thermostat), low-temperature alarm, and automatic restart memory following power interruption
• Three scalable models (YB8, YB12, YB26) offering 8 L, 12 L, and 26 L working volumes—each with identical control logic, display interface, and safety protocols for method transferability
• CSA-certified design compliant with UL 61010-1 and CAN/CSA-C22.2 No. 61010-1, supporting audit readiness in North American regulated environments

Sample Compatibility & Compliance

The YB series accommodates standard laboratory glassware—including beakers (up to 2 L), test tube racks, cuvette holders, and reaction flasks—within its defined working dimensions (e.g., 275 × 155 × 200 mm for YB8). The bath fluid is compatible with deionized water, glycerol-water mixtures, and silicone oils up to 99°C; oil use requires verification of flash point and viscosity limits per ASTM D92 and ISO 2909. All models meet IEC 61000-6-3 (EMC emissions) and IEC 61000-6-2 (immunity) standards. For regulated QC/QA applications, the digital temperature logging capability (via optional RS232/USB interface) supports 21 CFR Part 11-compliant data integrity when paired with validated third-party software—enabling electronic signatures, audit trails, and user access controls.

Software & Data Management

While the front-panel interface operates autonomously, optional communication modules enable bidirectional control and data acquisition via PC. The embedded firmware supports ASCII protocol commands for remote setpoint adjustment, real-time temperature readback, and status polling. When connected to validated LIMS or ELN platforms, logged temperature profiles can be timestamped, archived, and cross-referenced with sample IDs—fulfilling traceability requirements under ISO/IEC 17025 Clause 7.7 and USP . The unit stores up to 99 programmable setpoints internally, each assignable with ramp rate, dwell time, and hold duration—supporting multi-stage thermal protocols without external scripting.

Applications

• Pre-incubation of microbial cultures and PCR reagents at precisely controlled temperatures
• Thermal equilibration of reference standards prior to density, viscosity, or refractive index measurement
• Controlled dissolution testing per USP and Ph. Eur. 2.9.3 using jacketed vessels
• Calibration of thermistors, RTDs, and infrared thermometers against NIST-traceable references
• Accelerated stability studies (ICH Q1A) requiring constant temperature exposure for pharmaceutical intermediates
• Support of enzymatic assays where activity is highly sensitive to ±0.2°C deviation (e.g., lactate dehydrogenase, alkaline phosphatase)

FAQ

Is the YB series suitable for oil bath applications?
Yes—models support silicone oil and glycerol-water mixtures up to 99°C; consult the fluid’s flash point and thermal expansion coefficient before operation.
Does the unit provide temperature logging capability out-of-the-box?
No—data logging requires optional RS232 or USB interface module and compatible software; internal memory retains only setpoint history.
Can the YB bath be used in a fume hood environment?
Yes—its sealed electronics and low-voltage pump design meet Class II, Division 2 hazardous location requirements when installed per NEC Article 500.
What maintenance intervals are recommended for optimal performance?
Inspect pump impeller and tank seal annually; clean stainless steel surfaces with 70% ethanol or citric acid solution every 3 months in high-use settings.
Is calibration certificate included with shipment?
A factory-as-tested certificate is provided; full ISO/IEC 17025 calibration with uncertainty budget requires separate service order.