A universal plate stand is a critical accessory for an overhead stirrer, providing the stability and height adjustment necessary to mix liquids safely in various laboratory vessels. While specific designs vary, most “universal” models are compatible across brands like ONiLAB, Dragon Lab, and Scilogex.
Specifications
| OS40-Pro | OS20-Pro | OS40-S | OS20-S | |
|---|---|---|---|---|
| Maximum Stirring Quantity (Liters) | 40 L | 20 L | 40 L | 20 L |
| Motor Rating Input | 120 W | 60 W | 120 W | 60 W |
| Motor Rating Output | 100 W | 50 W | 100 W | 50 W |
| Speed Range (RPM) | 50-2200 | 50-2200 | 50-2200 | 50-2200 |
| Speed Display Accuracy | ±3% | ±3% | – | – |
| Speed Display Resolution (RPM) | 1 | 1 | 1 | 1 |
| Maximum Torque (Ncm) | 60 | 40 | 60 | 40 |
| Dimensions (mm) | 83 x 220 x 186 | 83 x 220 x 186 | 83 x 220 x 186 | 83 x 220 x 186 |
| Weight | 2.8 kg | 2.6 kg | 2.8 kg | 2.6 kg |
| Voltage (V AC) | 100-240 | 100-240 | 100-240 | 100-240 |
| Power | 130 W | 70 W | 130 W | 70 W |
| Protection Class | IP21 | IP21 | IP21 | IP21 |
| Working Temperature (C) | 5-40 | 5-40 | 5-40 | 5-40 |
Applications
OS20-S/OS40-S Features:
- Analog speed control with LED real-time display of speed
OS20-Pro/OS40-Pro Features:
- Anti-spill feature: PC control insures smooth acceleration, preventing spills.
- LCD real-time display: Set value and actual value are displayed.
- PC connection via RS232 Port: Allows for PC control and documentation of all measuring values.
Core Components
- Base Plate: Typically a heavy, rectangular slab made of cast iron or stainless steel to prevent the assembly from tipping, especially when stirring high-viscosity materials. Standard sizes are often around 20 x 31 cm.
- Support Rod: A vertical rod, usually 78 cm to 80 cm in height, that screws into the base. Some versions use a two-section combined rod for easier storage.
- Fixing Device (Clamp): A double-clamp or boss-head connector that secures the motor head of the overhead stirrer to the support rod. This allows you to slide the motor up or down to accommodate different beaker sizes.

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