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 5–40 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 5–40 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.
