SiLe 98-2 High-Strength Magnetic Stirrer (10 L Capacity)

Overview

The SiLe 98-2 High-Strength Magnetic Stirrer is an industrial-grade laboratory stirring instrument engineered for consistent, reliable mixing of low-to-medium viscosity liquids in volumes up to 10 L. Designed around a robust permanent magnet drive system and precision-controlled DC motor, it operates on the principle of magnetic coupling—where rotation of an internal rotating magnet beneath the work surface induces synchronous motion in a magnetic stir bar immersed in the sample vessel. This non-contact drive mechanism eliminates mechanical wear, ensures leak-free operation, and supports continuous duty cycles under standard ambient laboratory conditions. The unit is optimized for applications requiring stable rotational speed across extended periods, including buffer preparation, reagent dissolution, titration support, and pre-analytical sample homogenization in chemistry, environmental, and quality control laboratories.

Key Features

• High-torque motor delivering 80 mN·m output—enabling effective agitation of viscous solutions and large-volume containers (e.g., 5–10 L glass beakers or stainless steel vessels)
• Wide speed regulation range from 50 to 2000 rpm with smooth analog control, facilitating precise adjustment for sensitive protocols such as enzyme reconstitution or pH-sensitive reactions
• Stainless steel top plate offering corrosion resistance, thermal stability, and ease of decontamination—compatible with routine cleaning agents and alcohol wipes
• Compact footprint (230 × 160 × 97 mm) and lightweight design (2.8 kg) suitable for benchtop deployment in crowded fume hoods or shared instrumentation spaces
• Low-power consumption (40 W) and energy-efficient DC motor architecture supporting sustainability goals without compromising performance
• Continuous-duty rated electronics with overheat protection circuitry—ensuring operational integrity during unattended overnight runs

Sample Compatibility & Compliance

The SiLe 98-2 accommodates standard laboratory glassware including borosilicate beakers (up to 10 L), Erlenmeyer flasks, and custom reaction vessels equipped with appropriately sized magnetic stir bars (recommended ≥40 mm length for 10 L volumes). It is not designed for use with ferromagnetic containers or samples containing suspended ferrous particles that may interfere with magnetic coupling efficiency. While the device itself does not incorporate temperature control, it is routinely deployed in conjunction with external heating mantles or water baths where thermal management is required. The unit complies with IEC 61010-1:2010 safety standards for electrical equipment used in laboratory environments and meets CE marking requirements for electromagnetic compatibility (EMC Directive 2014/30/EU). It is suitable for GLP-compliant workflows when integrated into documented SOPs; however, it does not provide electronic audit trails or FDA 21 CFR Part 11–compliant data logging natively.

Software & Data Management

The SiLe 98-2 operates via manual analog speed control and does not include embedded microprocessor-based firmware, digital interface, or connectivity options (e.g., USB, RS-232, Bluetooth). As such, it generates no electronic data logs, timestamps, or exportable parameter records. All operational settings—including speed selection—are set directly via front-panel rotary knob and verified visually using the integrated LED indicator (non-calibrated, qualitative feedback only). For laboratories requiring traceable stirring parameters, integration with external process monitoring systems (e.g., PLC-linked sensors or time-lapse video documentation) is recommended. Documentation of usage—including date, operator ID, speed setting, and duration—must be maintained manually in lab notebooks or LIMS entries per institutional quality policy.

Applications

• Preparation of large-volume aqueous and organic solutions in QC/QA labs (e.g., mobile phase buffers for HPLC, calibration standards for ICP-MS)
• Homogenization of cell culture media and microbiological growth substrates prior to sterilization
• Supporting gravimetric dilution workflows where uniform suspension of solids is critical before aliquoting
• Facilitating chemical synthesis steps involving heterogeneous catalysis or precipitate dispersion
• Use in educational laboratories for demonstrating fluid dynamics principles and mass transfer kinetics at scale

FAQ

Does the SiLe 98-2 include a built-in heater or temperature control function?

No. The 98-2 is a standalone magnetic stirrer without heating capability. External heating sources must be used separately if thermal input is required.
What is the recommended stir bar size for optimal performance at 10 L volume?

A cylindrical stir bar measuring 40–50 mm in length and 8–10 mm in diameter is advised for efficient torque transfer and vortex stability in tall-form 10 L vessels.
Is the unit compatible with non-aqueous solvents such as acetone or chloroform?

Yes—provided the stir bar coating (e.g., PTFE or glass-coated) is chemically inert to the solvent, and the vessel remains stationary on the stainless steel surface during operation.
Can the SiLe 98-2 be used in explosion-proof environments?

No. It lacks ATEX or IECEx certification and is not rated for use in classified hazardous locations.
What maintenance is required for long-term reliability?

Routine cleaning of the stainless steel surface and periodic inspection of the stir bar for coating integrity are sufficient. No lubrication or internal servicing is necessary due to the brushless DC motor and sealed magnet assembly.