The IPS2050-P-T4 is the 4-arm PTFE (Teflon) propeller in the IPS2050 overhead stirrer accessory line — the chemical-resistant equivalent of the stainless IPS2050-P-S4 (which is the default propeller included with the IPS2050-20 / -40 chassis), sold at $172 ($62 premium over the $172.00 stainless version). Same high-coverage axial-radial flow pattern, different material: PTFE construction makes this the aggressive-chemistry general-purpose workhorse propeller — the right pick when the lab wants the broad mixing coverage of the 4-arm geometry but sample chemistry would corrode stainless.
Key Specifications
| SKU | IPS2050-P-T4 |
| Type | 4-Arm Propeller, PTFE (Teflon) |
| Flow pattern | High-coverage axial-radial — the general-purpose workhorse geometry |
| Material | PTFE (polytetrafluoroethylene) — chemical-resistant for aggressive solvents, high-acid / high-base, oxidizing chemistry |
| 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 |
| Stainless equivalent | IPS2050-P-S4 (4-arm stainless, $172.00 — default included with chassis; also sold separately as replacement) |
| PTFE family sister SKUs | IPS2050-P-T1 (one-line), IPS2050-P-T2 (centrifugal), IPS2050-P-T3 (paddle w/flat holes) |
| List price | $172 |
Why a PTFE 4-Arm Propeller — Aggressive-Chemistry General-Purpose Workhorse
The 4-arm geometry produces high-coverage axial-radial flow — the broadest mixing pattern of the IPS2050 impeller geometries. The PTFE 4-arm version is the right pick when the lab needs broad-coverage mixing AND sample chemistry includes aggressive solvents, strong acids, strong bases, or oxidizing chemistries. This is the natural escalation path from the included stainless 4-arm propeller for labs running mixed-chemistry workflows.
Pick the PTFE 4-arm propeller (IPS2050-P-T4) when:
- Workflow is general-purpose aggressive-chemistry mixing — broad-coverage flow pattern + chemical resistance
- Aggressive-solvent organic-extraction workflows at the 5–40 L pilot batch scale
- Strong-acid or strong-base general-purpose mixing where the workhorse geometry covers diverse vessel-shape variations
- Multi-protocol aggressive-chemistry workflow where workflow-specific impellers (-T1, -T2, -T3) would require frequent swap
Pick the stainless equivalent (IPS2050-P-S4) for aqueous / mild-solvent workflows or as replacement / spare for the included default propeller.
Stainless vs PTFE Decision Framework — 4-Arm Pair
| Sample chemistry | Material | SKU | List price | Notes |
| Aqueous, mild solvents, neutral-pH | Stainless | IPS2050-P-S4 | $172.00 | Default included with IPS2050-20 / -40 chassis |
| Aggressive solvents, strong acid / base, oxidizing | PTFE | IPS2050-P-T4 (this product) | $172 | Aggressive-chemistry workhorse |
The included-with-chassis status of the stainless -S4 means most labs already have a 4-arm stainless on hand; the PTFE -T4 is the specifically-procured chemical-resistance escalation when aggressive chemistry workflows enter the lab's protocol mix.
IPS2050 PTFE Family Flow-Pattern Comparison
| SKU | Geometry | Flow pattern | Best for |
| IPS2050-P-T1 | One-line | Axial | Aggressive-chemistry particulate suspension |
| IPS2050-P-T2 | Centrifugal | Radial | Aggressive-chemistry dissolution / solution prep |
| IPS2050-P-T3 | Paddle w/flat holes | Mixed turbulent | Aggressive-chemistry high-viscosity (pair with OS-40L) |
| IPS2050-P-T4 (this product) | 4-arm | High-coverage axial-radial | Aggressive-chemistry general-purpose workhorse |
All four PTFE variants priced identically at $172.
Application Profile
Aggressive-solvent organic synthesis at pilot scale — general-purpose mixing in DMSO / DMF / halogenated-solvent reaction prep at the 5–40 L vessel scale.
Strong-acid / strong-base general formulation — broad-coverage mixing in concentrated mineral-acid or strong-base reagent prep.
Oxidizing-chemistry general formulation — peroxide-bearing or oxidizing-agent-bearing reaction / formulation prep.
Multi-protocol aggressive-chemistry shared facilities — labs running diverse aggressive-chemistry workflows benefit from a workhorse 4-arm PTFE propeller as the default impeller (paralleling the stainless -S4's role as default for aqueous workflows).
Cosmetic and personal-care reactive-ingredient general mixing — formulation development with diverse reactive ingredients (surfactants, salicylic / glycolic acid systems, retinoids, peroxide-bearing formulations).
Pharmaceutical aggressive-ingredient pilot lines — semi-solid and emulsion formulations including reactive cosmetic-class or pharmaceutical ingredients.
Educational laboratory aggressive-chemistry training — graduate-level chemistry programs introducing aggressive-chemistry mixing concepts.
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 PTFE family for full chemical-resistance coverage. Labs running diverse aggressive-chemistry workflows benefit from the full T1-T4 PTFE inventory ($688 total for all four geometries).
Confirm at quote: chassis pairing, sample-chemistry compatibility justification (stainless vs PTFE decision), workflow flow-pattern requirement, and lead time.
Warranty: Per Benchmark Industrial standard accessory terms — confirm at quote.
IPS2050 PTFE / Teflon propeller selection:
- IPS2050-P-T1 — One-line, axial flow — aggressive-chemistry particulate suspension
- IPS2050-P-T2 — Centrifugal, radial flow — aggressive-chemistry dissolution
- IPS2050-P-T3 — Paddle w/flat holes, mixed turbulent — aggressive-chemistry high-viscosity (pair with OS-40L)
- IPS2050-P-T4 (this product) — 4-arm, general-purpose — aggressive-chemistry workhorse
Pick the PTFE 4-arm propeller for general-purpose aggressive-chemistry mixing; stainless equivalent (IPS2050-P-S4) is the default included with chassis for aqueous / mild-solvent workflows.
