1. Introduction
The Slendor SH-2 Magnetic Stirrer Hot Plate Mixer is a versatile laboratory instrument designed for efficient stirring and heating of liquids. It is widely used in scientific research institutions, industrial settings, agricultural applications, and educational laboratories. This manual provides essential information for the safe and effective operation, setup, and maintenance of your device.
2. Safety Precautions
- Always operate the device on a stable, level, and heat-resistant surface.
- Ensure proper ventilation to prevent heat buildup.
- Do not touch the heating plate during or immediately after operation, as it can reach high temperatures. Use appropriate heat-resistant gloves.
- Avoid spilling liquids onto the control panel or electrical components. In case of spillage, immediately disconnect power and clean thoroughly.
- Use only glassware and containers that are compatible with magnetic stirring and heating.
- Keep the magnetic stir bar centered in the vessel to ensure stable stirring.
- Do not operate the device with an empty vessel on the heating plate when the heating function is active.
- Unplug the device from the power outlet when not in use or before cleaning.
- This device is intended for laboratory use only. Do not use it for household or other non-specified purposes.
3. Package Contents
Please check the package contents upon receipt to ensure all items are present and undamaged:
- Slendor SH-2 Magnetic Stirrer Hot Plate Mixer Unit
- Digital Thermometer
- 1-inch Teflon Coated Magnetic Stir Bar
- Support Stand (Rod and Clamp)
- Fuse
4. Product Overview
The Slendor SH-2 combines magnetic stirring and heating capabilities in a compact design. Key components include the heating plate, stirring and heating control knobs, and a power switch.
Overall View and Components
Image: The Slendor SH-2 Magnetic Stirrer Hot Plate Mixer shown with a beaker, digital thermometer, stir bar, and support stand.
Key Dimensions and Capacities
Image: Visual representation of the 1-inch stirring bar, 4.7x4.7 inch heating plate, 1000ml maximum capacity, 100-1600 RPM stirring speed, and 270°C/520°F maximum temperature.
Magnetic Stir Bar Properties
Image: Details of the magnetic stir bar, highlighting its composition of PTFE and magnetic steel, and properties such as high temperature resistance, durability, and chemical resistance.
Heating and Stirring Principles
Image: Illustrates the excellent thermal conductivity of the heating plate for rapid heating and the strong magnetism for stable and fast stirring.
Application Areas
Image: Examples of where the magnetic stirrer can be used, including Medical and Health, Colleges and Universities Laboratory, Scientific Research Institutions, Industrial, and Agricultural sectors.
Detailed Dimensions
Image: Detailed measurements of the magnetic stirrer unit and the thermometer, including height, width, and plate size.
5. Setup
- Placement: Place the magnetic stirrer on a stable, flat, and heat-resistant surface in a well-ventilated area.
- Assemble Support Stand: Insert the support rod into the designated hole at the back of the unit and secure it. Attach the clamp to the support rod at the desired height.
- Prepare Vessel: Place your beaker or flask containing the liquid to be stirred/heated onto the center of the heating plate.
- Insert Stir Bar: Carefully drop the magnetic stir bar into the liquid inside the vessel.
- Connect Power: Plug the power cord into a suitable 110V AC power outlet.
6. Operating Instructions
6.1 Power On/Off
Locate the main power switch on the side of the unit. Flip the switch to the 'ON' position to power on the device. Flip to 'OFF' to power off.
6.2 Stirring Function
The stirring speed is controlled by the 'STIRRING' knob on the front panel. Rotate the knob clockwise to increase the stirring speed (up to 2000 RPM) and counter-clockwise to decrease it. The 'POWER' indicator light will illuminate when the unit is powered on.
Video: Demonstration of the stirring function of the Slendor Magnetic Stirrer, showing the stir bar creating a vortex in a blue liquid.
6.3 Heating Function
The heating function is controlled by the 'HEATING' knob. Rotate the knob clockwise to activate and increase the heating intensity. The 'HEAT' indicator light will illuminate when the heating element is active. The maximum temperature is 520°F (270°C). Monitor the liquid temperature using the included digital thermometer.
Video: Demonstration of the heating function of the Slendor Magnetic Stirrer, showing the heat indicator light and the temperature increasing on the digital thermometer.
6.4 Digital Thermometer Usage
The included digital thermometer is a separate tool for precise temperature monitoring. It can be attached to the support stand using the clamp.
Image: Detailed view of the digital thermometer and its buttons for MAX/MIN display, ON/OFF, HOLD, and °C/°F unit conversion.
- Power On/Off: Press the power button to turn the thermometer on or off.
- MAX/MIN: Press the 'MAX/MIN' button to display the maximum and minimum recorded temperature values. Long press for 2 seconds to clear the recorded values.
- HOLD: Press the 'HOLD' button to hold the current temperature reading on the display.
- °C/°F Conversion: Long press the 'HOLD' button for 2 seconds to switch between Celsius (°C) and Fahrenheit (°F) temperature units.
- Placement: Insert the thermometer probe into the liquid. Avoid inserting it too deeply during stirring to prevent interference with the magnetic stir bar.
Note: The thermometer has a temperature range of -50°C to 300°C (-58°F to 572°F) with an accuracy of ±1°C/1°F.
Continuous Operation: The device is designed for continuous operation for up to 4 hours at high-speed stirring and up to 8 hours at medium-speed stirring.
7. Specifications
| Feature | Specification |
|---|---|
| Voltage | 110V |
| Heating Power | 180W |
| Stirring Capacity | Max 1000ml |
| Heating Plate Size | 4.7" x 4.7" |
| Stirring Speed | 100 ~ 2000 RPM |
| Max Heating Temperature | 270°C / 520°F |
| Product Dimensions | 8.5 x 5 x 3.39 inches |
| Product Weight | 4.63 Pounds |
| Material (Stir Bar) | Polytetrafluoroethylene (PTFE) |
| Country of Origin | China |
8. Maintenance
- Cleaning: Always unplug the device before cleaning. Wipe the heating plate and exterior surfaces with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Spills: Clean up any spills immediately to prevent corrosion or damage to the unit.
- Storage: Store the magnetic stirrer in a clean, dry place away from direct sunlight and extreme temperatures when not in use.
- Stir Bar Care: The Teflon-coated stir bar is resistant to many chemicals but should be cleaned after each use to prevent cross-contamination.
- Fuse Replacement: If the unit does not power on, check the fuse located near the power inlet. Replace it with a fuse of the same type and rating if necessary.
9. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not power on. | No power supply; Blown fuse; Power switch off. | Check power cord connection and outlet; Replace fuse; Ensure power switch is ON. |
| Stir bar does not spin or spins erratically. | Stir bar not centered; Viscosity too high; Stirring speed too low; Vessel too large. | Center the stir bar; Reduce liquid viscosity if possible; Increase stirring speed; Use appropriate size vessel. |
| Heating plate not heating. | Heating knob off; Unit not powered on; Internal fault. | Turn heating knob clockwise; Ensure unit is powered on; Contact customer support if problem persists. |
| Temperature reading on thermometer is inaccurate. | Probe not fully immersed; Battery low; Interference. | Ensure probe is immersed in liquid; Replace thermometer battery; Reposition probe to avoid stir bar interference. |
| Unit emits unusual smell or smoke. | Overheating; Internal component issue. | Immediately power off and unplug the unit. Do not use. Contact customer support. |
Note on Heating Control: The SH-2 model provides rapid heating. While the heating knob adjusts intensity, it may not offer precise temperature control for maintaining a constant temperature. It is recommended to use the included digital thermometer to monitor the liquid's temperature accurately during heating processes.
10. Warranty and Support
Specific warranty information and detailed support contacts are not provided in the available product data. For any questions, technical assistance, or warranty claims, please refer to the contact information provided by your retailer or the manufacturer, Slendor, at the time of purchase. Keep your purchase receipt as proof of purchase.