Magnetic rotor stirrer

Magnetic stirrers use a base-mounted magnetic field to drive the rotation of a PTFE-coated magnetic stir bar inside a container, enabling liquid mixing. They are used for preparing laboratory solutions and mixing reactants, avoiding contamination from mechanical transmission.
Selection
When selecting, consider matching the sample viscosity with the rotational speed range, using corrosion-resistant rotors to withstand acidic and alkaline environments, opting for heating types to meet constant temperature needs, ensuring the base size corresponds to the container dimensions, and incorporating safety features to prevent dry burning.

Terms

Standards

Instruments

Heating power 800W, speed range 0-2600 rpm, support vacuum reaction and pressure reaction for a long time stirring, with durable magnetic steel and PTFE stirrer.

$ 209.00

With electric and magnetic dual stirring function, Temperature range to 100 ℃, Max. stirring Capacity 1000mL, suitable for small volume sample precise and stable stirring.

$ 180.00

Driven by three-phase brushless DC motor, with large torque and strong magnetic force, Max. stirring Capacity 50L, stirring speed 60~ 1400rpm, digital display Rotation speed is clear and intuitive, suitable for large-capacity stirring needs.

$ 545.00

The rotor shear rate is 3.3N, the sample volume is only 67 μL, the applicable viscosity range is 300~ 600000mPa · s, and the accuracy is +/- 2% F. S, which is suitable for a variety of fluid testing needs.

$ 683.00

DC brushless motor design, Rotation speed 0~ 2000rpm, put in the stirrer without hopper; double-decked thermal insulation structure, rapid heating and prolong the life of the host; built-in over-temperature protection device, safe and reliable use.

$ 222.00

The rotor shear rate is 2.0N, the sample volume is only 100 μL, the applicable viscosity range is 500~ 1000000mPa · s, the accuracy is +/- 2% F. S, suitable for processing a variety of fluid samples.

$ 683.00

Max. stirring Capacity 1000mL, Speed range 0-1600rpm, using magnetic field drive technology implementation of non-contact stirring, suitable for a variety of low viscosity liquid mixing needs.

$ 107.00

Using brushless DC motor to achieve stepless speed regulation of 0~ 1500rpm, equipped with strong magnetic steel to ensure strong stirring force and stable Rotation speed, Temperature range RT +~ 150 ℃, Heating power 360W adjustable, support mechanical timing 20~ 120min.

$ 212.00

Using three-phase brushless DC motor to achieve 50-1500rpm stable speed regulation, temperature control accuracy +/- 1 ℃ and with temperature protection function, soft start design to prevent stirrer beating, suitable for long-term unmanned operation.

$ 424.00

Adopt abrasion-free magnetic coil technology, Speed range 60~ 2000rpm, support cycle swirl/spin and clockwise setting, IP65 waterproof rating, quieter and lighter operation.

$ 153.00

Rotation speed is stable with brushless DC motor, torque is 73.5mN · M, magnetic force is especially strong, suitable for large capacity stirring, Max. stirring Capacity 20L, Speed range 60~ 2000rpm.

$ 323.00

Driven by three-phase brushless DC motor, with large torque and strong magnetic force, Max. stirring Capacity 50L, stirring speed 60~ 1400rpm, suitable for large-capacity stirring, and equipped with digital display Rotation speed.

$ 520.00

Magnetic field drive technology implementation of liquid mixing, Speed range 0-1800rpm, Max. stirring Capacity 2000ml, equipped with 0-9999 minutes timing function, table size 130 * 130mm.

$ 104.00

Dedicated to 0.1~ 10mPa · s ultra-low viscosity liquid measurement, the sample volume is only 25ml, the cylinder rotor design can accurately calculate the shear rate, easy to sample detailed analysis.

$ 173.00

Magnetic field drive technology implementation of liquid mixing, Speed range 0-1800rpm adjustable, maximum stirring capacity 2000ml, equipped with digital timing function, support charging and easy to move operation.

$ 115.00

Articles

Guide to Selecting a Laboratory Rotational Viscometer for Coatings Development
This article introduces how to select a laboratory rotational viscometer in coatings research and development. It first explains the principle of rotational viscometers measuring viscosity based on shear resistance, and then points out that key parameters to consider during selection include measurement range, shear rate, temperature control, and rotor configuration.
Practical Guide to Selecting Rotors and Speeds for Rotational Viscometers
A rotational viscometer measures viscosity by detecting the resistance encountered by a rotor rotating in the sample. When selecting a rotor, it is necessary to consider the estimated viscosity range of the sample, ensuring that the torque reading falls within 10% to 90% of the instrument's measurement range, while also taking into account the sample volume and rheological properties.
Rubber non-rotor vulcanization tester measures vulcanization curve.
The rubber non-rotor vulcanization tester is used to measure the curve of torque versus time during the vulcanization process, in order to assess the crosslinking degree and vulcanization characteristics of rubber.
Comparison of Rotational Viscometer and Capillary Rheometer in Testing the Flowability of Resin Processing
The rotational viscometer measures torque via rotor rotation, making it suitable for testing the static or low-shear fluidity of resins under low shear rates, with simple and quick operation. The capillary rheometer, on the other hand, forces samples through a capillary to simulate high-shear processing, providing flow data closer to actual production conditions, but it is more complex and time-consuming to operate.
Selection of Coating Thickness Gauges Using Magnetic and Eddy Current Methods on Different Substrates
This article introduces two main methods for coating thickness gauges: the magnetic method and the eddy current method. When choosing a method, the key is to determine it based on the electromagnetic properties of the substrate.
Rotational Viscometer Measures Viscosity and Processability of Resin Melts
A rotational viscometer calculates viscosity by measuring the torque experienced by a rotor as it rotates in the resin melt, thereby helping to understand the material's processing properties.
Application of Coating Thickness Gauges in Electroplating Thickness Detection
Coating thickness gauges are used to measure the thickness of electroplated layers, primarily employing the electromagnetic induction method for measuring non-magnetic coatings on magnetic substrates, or the eddy current method for measuring insulating coatings on non-magnetic metal substrates.
Eddy current thickness gauge measures metal coatings on non-conductive substrates.
The eddy current thickness gauge utilizes the principle of electromagnetic induction, generating an alternating magnetic field through the probe coil to induce eddy currents in the metal coating, thereby measuring thickness based on changes in coil impedance.
Rotational Viscometer for Measuring and Controlling the Application Viscosity of Coatings
A rotational viscometer is a commonly used tool for controlling the viscosity of coatings during application, as it measures the torque generated by a rotor rotating in a fluid to calculate viscosity.
Stormer Viscometer for Determining Krebs Viscosity of Paints
This article introduces the method of measuring the Krebs viscosity value of colored paints using a Stormer viscometer. Viscosity is a key indicator that affects the application and storage of coatings. The Krebs unit (KU) quantifies viscosity based on the resistance encountered by a rotor as it rotates within the paint sample.
Laboratory Application Scenarios of Milligram Precision Balances
The milligram precision balance can accurately weigh up to 0.001 grams, primarily utilizing electromagnetic force compensation technology, and its performance is related to parameters such as repeatability and linearity error.
Comparison of Dual-Principle Instruments: Magnetic Induction vs. Eddy Current for Coating Thickness Measurement
This article compares the principles of two coating thickness gauges. The choice of method depends on the substrate material: magnetic induction is used for magnetic metals, while eddy current is applied for non-magnetic metals.
Eddy current thickness gauge detects coatings on non-ferrous metals.
The eddy current thickness gauge operates on the principle of electromagnetic induction, generating an alternating magnetic field through the probe coil, which induces eddy currents on the surface of non-ferrous metal substrates.
Magnetic thickness gauge measures the thickness of coatings on steel surfaces.
Magnetic thickness gauges are used to measure the thickness of non-magnetic coatings on ferromagnetic substrates such as steel, based on the principles of magnetic induction or changes in magnetic attraction. Prior to use, calibration should be performed according to relevant standards, and attention should be paid to factors such as substrate characteristics, workpiece shape, and surface conditions that may affect the measurements.
The principle of measuring dry film thickness with a coating thickness gauge
Coating thickness gauges measure dry film thickness through non-destructive methods, with commonly used principles including electromagnetic induction, eddy current, and ultrasonic methods.