The Benchmark Scientific OS20L is a digital overhead stirrer for low- and medium-viscosity samples up to 20 L (water). A brushless DC motor delivers 40 Ncm of torque across 30–2,200 rpm and handles viscosities up to 10,000 mPas. Speed and run time are set and displayed on an LCD. The keyless feed-through chuck grips shafts of 0.5–10 mm, and the stirrer comes with a support stand, mounting hardware and a 4-arm stainless steel propeller (IPS2050-P-S4). It carries a 2-year warranty.
Key features
- Mixing capacity 20 L (water); viscosity to 10,000 mPas
- 40 Ncm maximum torque from a brushless DC motor
- 30–2,200 rpm, set and shown on an LCD
- Tool-free feed-through chuck for 0.5–10 mm shafts
- Overload sensors stop the motor on high viscosity or obstruction
- Stand fits vessels up to 24 in high; 4-arm propeller included
Specifications
| Brand | Benchmark Scientific |
|---|---|
| Catalog number | IPS2050-20 / IPS2050-20-E |
| Mixing Capacity (Water) | 20 L |
| Speed Range | 30–2,200 rpm |
| Max Torque | 40 N·cm |
| Max Viscosity | 10,000 mPa·s |
| Power | 60 W input / 50 W output |
| Motor | DC brushless |
| Chuck Diameter Range | 0.5–10 mm |
| Dimensions (W × D × H) | 7.3 × 3.3 × 8.7 in (18.6 × 8.3 × 22.0 cm) |
| Weight (Mixer) | 2.6 kg |
| Protection Rating | IP42 |
| Ambient Operating Range | 5–40 °C |
| Electrical | 100–240 V AC, 50–60 Hz |
| Included | Support stand and 4-arm stainless steel propeller |
| Warranty | 2 years |
Ordering information
| Catalog number | Power |
|---|---|
| IPS2050-20 | 100–240V, US plug |
| IPS2050-20-E | 100–240V, European plug |
Accessories listed for this model
| Catalog number | Part |
|---|---|
| IPS2050-P-S4 … | Benchmark Scientific Overhead Stirrer Propeller IPS2050-P Series |
Questions about the OS20L Overhead Stirrer IPS2050-20
What accessories are available for the OS20L Overhead Stirrer IPS2050-20?
Benchmark Scientific lists IPS2050-P-S4 (Overhead Stirrer Propeller) for the OS20L Overhead Stirrer IPS2050-20.
Is the OS20L Overhead Stirrer IPS2050-20 available with a European plug?
Yes. IPS2050-20-E is the European-plug version of IPS2050-20; both run on 100–240V, so only the plug differs.
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