Product Overview
A magnetic stirrer is a laboratory device that uses a rotating magnetic field to drive a PTFE-coated stir bar immersed in a liquid, enabling contactless, contamination-free mixing of low-viscosity liquids and solid-liquid mixtures. BKMAMLAB Labshark magnetic stirrers are designed for life-science, chemical, pharmaceutical, and educational laboratories requiring compact, stable, and quiet operation.
Key Features & Advantages
- Six configurations: Mini (1 L), Mini Digital Display (1 L, LED readout), Single (1-position), Single-Link (multi-position single-row), Quadruple-Link (4-position), and Single-Link Heating (integrated hot-plate model with independent temperature and stirring control).
- High-strength neodymium magnetic drive: Ensures reliable stirring even at higher viscosities and with larger stir bars.
- Brushless DC motor: Provides smooth, quiet operation with long service life and no carbon-brush replacement.
- Chemical-resistant ABS housing: Withstands common laboratory solvents and reagents.
- Independent temperature and stirring control (heating models): Allows precise, simultaneous control of mixing speed and heating temperature.
Technical Specifications
- Models: Mini, Mini Digital Display, Single, Single-Link, Quadruple-Link, Single-Link Heating
- Capacity: Up to 1 L per position (model-dependent)
- Temperature range (heating models): Room temperature +5°C up to 200°C
- Temperature control: Analog or digital PID
- Motor type: Brushless DC motor
- Magnetic drive: High-strength neodymium
- Stir bar coating: PTFE
- Operating ambient temperature: 5°C to 40°C
- Relative humidity: ≤80%
- Altitude: Up to 2000 m, indoor use
Comparison & Competitive Advantages
Unlike overhead mechanical stirrers that require a shaft penetrating the vessel and risk contamination, the BKMAMLAB Labshark magnetic stirrer provides sealed, contactless mixing that is ideal for sterile and contamination-sensitive workflows. Compared to entry-level magnetic stirrers, the neodymium magnetic drive maintains coupling strength even at higher speeds and viscosities, preventing stir bar decoupling. The Quadruple-Link model enables simultaneous stirring of four vessels, increasing throughput without the cost of four separate instruments.
Applications
Suitable for buffer preparation, reagent mixing, pH titration, dissolution studies, microbiological culture suspension, and general chemistry mixing. Common use environments include academic research laboratories, pharmaceutical development, industrial quality control, and educational teaching labs. The heating model is ideal for applications requiring simultaneous temperature control and mixing, such as enzyme reactions and sample dissolution.
Frequently Asked Questions
Q: What is a magnetic stirrer and how does it work?
A: A magnetic stirrer uses a rotating magnetic field to spin a PTFE-coated stir bar placed inside a liquid container. The stir bar rotates at a controlled speed, mixing the liquid without any physical connection to the instrument, ensuring contamination-free operation.
Q: What volume can the BKMAMLAB Labshark magnetic stirrer handle?
A: The Mini and Single models support up to 1 L per position. For larger volumes or multi-vessel workflows, the Single-Link and Quadruple-Link models provide flexible multi-position stirring capabilities.
Q: Can the magnetic stirrer heat and stir at the same time?
A: Yes, the Single-Link Heating model integrates a hot plate with independent temperature control (up to 200°C) and stirring speed control, allowing simultaneous heating and mixing with precise PID temperature regulation.
Q: How do I prevent the stir bar from decoupling during operation?
A: Use a stir bar appropriate for the vessel size and liquid viscosity. The high-strength neodymium magnetic drive in BKMAMLAB Labshark stirrers minimizes decoupling. Start at a lower speed and gradually increase to the desired setting. Avoid using excessively viscous liquids that exceed the rated capacity.
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