YIHENG IT-09A12 Advanced Heating Magnetic Stirrer

Overview

The YIHENG IT-09A12 Advanced Heating Magnetic Stirrer is an engineered laboratory platform designed for precise, reproducible mixing and temperature-controlled sample preparation in academic, pharmaceutical, and industrial quality control laboratories. Operating on the principle of magnetic coupling—where a rotating permanent magnet beneath the heated aluminum plate induces rotation of a PTFE- or glass-coated stir bar within the vessel—the IT-09A12 delivers consistent torque transfer across viscosity gradients without mechanical contact. Its integrated heating system utilizes a high-efficiency resistive element embedded in a precision-machined anodized aluminum plate, enabling rapid thermal response and uniform surface temperature distribution. Unlike basic benchtop stirrers, the IT-09A12 implements closed-loop temperature regulation via optional external Pt100 probe (A-series configuration), supporting applications requiring strict thermal compliance per ISO 17025 or USP environmental conditioning protocols.

Key Features

• Brushless DC motor delivering stable rotational output from 100 to 1600 rpm with ±2 rpm speed accuracy, enabling reliable agitation of low-viscosity solvents (e.g., aqueous buffers) and higher-viscosity media (e.g., polymer solutions up to 15,000 mPa·s at reduced volumes)
• 12-liter maximum stirring capacity with high-torque drive architecture—optimized for round-bottom flasks, beakers, and jacketed reactors up to Ø180 mm base diameter
• LCD menu-driven interface displaying real-time setpoints and measured values for speed, plate temperature (or internal solution temperature when equipped with external probe), and countdown timer—all on a single screen
• Dual-layer thermal protection system: programmable temperature deviation cutoff (10–30 °C above setpoint) and independent plate-limit safety cut-off at 330 °C, both compliant with IEC 61010-1 Class II electrical safety requirements
• Corrosion-resistant anodized aluminum housing and heating plate with proprietary composite coating—resistant to common lab reagents including diluted acids, alkalis, and organic solvents; smooth surface prevents residue accumulation
• Integrated anti-spill liquid channel surrounding the control panel—diverts overflow away from PCB assemblies, enhancing long-term reliability in high-throughput environments
• Configurable operational modes: delayed start, forward/reverse alternation, Fahrenheit/Celsius unit selection, auto-tuning PID parameters, audible/visual alarm thresholds, power-on default behavior, post-timer hold temperature, and factory reset capability

Sample Compatibility & Compliance

The IT-09A12 supports standard laboratory glassware (borosilicate 3.3, Pyrex®) and stainless-steel vessels compatible with magnetic stirring. It accommodates stir bars ranging from 20 mm to 80 mm in length and is validated for use with PTFE-, PTFE/glass-, and ceramic-coated stir elements. As an A-series instrument, it accepts industry-standard Pt100 RTD probes (DIN EN 60751 Class B) for direct solution temperature monitoring—enabling traceable thermal control aligned with GLP documentation standards. The device meets CE marking requirements under the Low Voltage Directive (2014/35/EU) and Electromagnetic Compatibility Directive (2014/30/EU). Its thermal and rotational performance adheres to ASTM E2932–22 guidelines for laboratory heating equipment validation.

Software & Data Management

While the IT-09A12 operates as a standalone instrument without PC connectivity, its embedded firmware supports full audit trail functionality for critical parameters—including temperature setpoint changes, speed adjustments, timer activation, and safety event logging (e.g., deviation alarm triggers, limit shutdowns). All logged events retain timestamps and are retained across power cycles. For regulated environments, the unit’s deterministic behavior, non-volatile parameter storage, and absence of user-modifiable firmware satisfy foundational requirements for FDA 21 CFR Part 11 compliance when deployed within a documented laboratory information management system (LIMS) framework. Optional heat shield accessory (Cat. No. HS-IT09) provides physical barrier protection during elevated-temperature operations (>60 °C), further supporting risk mitigation in SOP-defined workflows.

Applications

• Buffer and reagent preparation under controlled thermal conditions for HPLC mobile phase formulation
• Synthesis reaction monitoring where homogeneous mixing and precise temperature ramping are required (e.g., condensation reactions, nanoparticle precipitation)
• Dissolution testing per USP using calibrated vessels and certified stir bars
• Microbiological media preparation requiring sterility-preserving agitation below boiling point
• Calibration standard mixing for viscometry and density measurement procedures
• QC sampling homogenization prior to filtration or spectrophotometric analysis

FAQ

What is the difference between the IT-09A and IT-09B models?
The IT-09A supports external Pt100 temperature probe input for direct solution temperature control and monitoring, whereas the IT-09B regulates only the heating plate surface temperature.
Can the IT-09A12 be used with non-magnetic vessels such as aluminum or thick-walled stainless steel containers?
No—magnetic coupling requires ferromagnetic permeability in the vessel base; only glass, ceramic, or thin-walled non-ferrous metal vessels with magnetic stir bars are compatible.
Is the unit suitable for continuous 24/7 operation in production environments?
Yes—the brushless DC motor, thermally optimized heatsink design, and dual-stage thermal protection support extended duty cycles when operated within ambient temperatures of 15–30 °C and relative humidity ≤70% non-condensing.
Does the IT-09A12 support RS-232 or USB communication for remote control or data export?
No—this model is intentionally designed as a local-operated, stand-alone instrument without digital communication interfaces.
What calibration documentation is provided with the unit?
Each shipment includes a factory calibration certificate verifying speed accuracy (±2 rpm) and plate temperature uniformity (±3 °C across 100 mm diameter zone at 100 °C), traceable to NIM (National Institute of Metrology, China).