The IPS2050-P-S2 is the centrifugal stainless steel impeller in the IPS2050 overhead stirrer accessory line, sold separately for use on the OS-20L (IPS2050-20 / -20-E) and OS-40L (IPS2050-40 / -40-E) overhead stirrer chassis. The centrifugal geometry produces predominantly radial flow, the right impeller for dissolution, solution preparation, surfactant mixing, and workflows where horizontal outward flow against the vessel wall produces faster dissolution than axial-flow geometries.
Key Specifications
| SKU | IPS2050-P-S2 |
| Type | Centrifugal impeller, stainless steel |
| Flow pattern | Radial flow (horizontal outward toward vessel walls) |
| Material | Stainless steel (general-purpose chemistry compatibility; aqueous, mild solvents, neutral-pH formulations) |
| Compatible chassis | IPS2050-20 / -20-E (OS-20L) and IPS2050-40 / -40-E (OS-40L) overhead stirrers |
| Mounting | Feed-through chuck on chassis (tool-less tightening / loosening) |
| Family sister SKUs | IPS2050-P-S1 (one-line propeller), IPS2050-P-S3 (paddle w/flat holes), IPS2050-P-S4 (4-arm; default included with chassis) |
| Teflon equivalent | IPS2050-P-T2 (centrifugal Teflon; aggressive-solvent compatibility) |
Why a Centrifugal Impeller: Radial Flow Selection
The centrifugal impeller produces horizontal outward flow that drives liquid against the vessel wall and back through the center, generating strong shear at the impeller tip and producing faster dissolution of solids and faster homogenization of immiscible phases than axial-flow geometries.
Pick the centrifugal impeller (IPS2050-P-S2) when:
- Workflow involves dissolving solids into liquid (salt, sugar, buffer reagents into water)
- Surfactant solution preparation where vigorous agitation accelerates micelle formation
- Emulsion homogenization at low-to-medium viscosity
- Aqueous and mild-solvent chemistry (stainless compatible)
Pick the Teflon equivalent (IPS2050-P-T2) when sample chemistry includes aggressive solvents, high-acid, or high-base formulations.
Flow-Pattern Comparison Across IPS2050 Stainless Family
| SKU | Geometry | Flow pattern | Best for |
| IPS2050-P-S1 | One-line | Axial | Particulate suspension, low-vortex mixing |
| IPS2050-P-S2 (this product) | Centrifugal | Radial | Dissolution, solution prep, surfactant mixing |
| IPS2050-P-S3 | Paddle w/flat holes | Mixed | Higher-viscosity formulation work |
| IPS2050-P-S4 | 4-arm | Axial-radial | General-purpose (included with chassis) |
Stainless vs Teflon Material Decision
| Material | Chemistry compatibility | Use case |
| Stainless steel (this product) | Aqueous, mild solvents, neutral-pH, food-grade workflows | General-purpose default |
| Teflon (IPS2050-P-T2) | Aggressive solvents (DMSO, DMF, halogenated), high-acid / high-base, oxidizing | Aggressive-chemistry escalation |
Application Profile
Buffer and reagent preparation. Lab-scale buffer prep where dissolving high-mass solid reagents into water benefits from centrifugal radial flow at the vessel-wall interface.
Surfactant solution preparation. Personal-care formulation development, emulsion-prep work, and detergent-formulation R&D benefit from the centrifugal radial-flow pattern.
Aqueous emulsion homogenization at low-to-medium viscosity in 5β40 L vessels.
Pharmaceutical formulation pilot lines for aqueous-organic solution prep and reagent dissolution.
Food-science beverage development for sugar / salt / acid dissolution at the 5β40 L pilot batch scale.
Educational molecular biology / chemistry programs demonstrating impeller-geometry effects on mixing efficiency.
Ordering & Configuration
Pair with chassis. Confirm OS-20L (IPS2050-20 / -20-E) or OS-40L (IPS2050-40 / -40-E) chassis inventory at order.
Pair with appropriate impeller geometry. Many workflows benefit from inventorying both -S1 (axial) and -S2 (radial) for protocol-dependent flow-pattern selection.
Confirm at quote: chassis pairing, sample-chemistry compatibility (stainless vs Teflon), workflow flow-pattern requirement, and lead time.
Warranty: Per Benchmark Industrial standard accessory terms. Confirm at quote.
IPS2050 stainless impeller / propeller selection:
- IPS2050-P-S1 (One-line propeller, axial flow) particulate suspension
- IPS2050-P-S2 (this product): Centrifugal impeller, radial flow, dissolution / solution prep
- IPS2050-P-S3 (Paddle w/flat holes, mixed flow) higher-viscosity work
- IPS2050-P-S4: 4-arm, general-purpose (included with chassis)
Pick the centrifugal impeller for dissolution and solution-preparation workflows; sister geometries cover other flow-pattern requirements; Teflon equivalents (IPS2050-P-T2 etc.) cover aggressive-chemistry compatibility.
