The IPS2050-P-T3 is the PTFE (Teflon) paddle with flat holes in the IPS2050 overhead stirrer accessory line, the chemical-resistant equivalent of the stainless IPS2050-P-S3 sister, sold at $172 ($62 premium over the $172.00 stainless version). Same mixed-flow turbulent pattern, different material: PTFE construction extends the paddle's high-viscosity-formulation workflow to aggressive solvents, strong acids, strong bases, and oxidizing chemistries.
Key Specifications
| SKU | IPS2050-P-T3 |
| Type | Paddle with flat holes, PTFE (Teflon) |
| Flow pattern | Mixed axial / radial (high local turbulence) |
| 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 |
| Recommended chassis | OS-40L (IPS2050-40 / -40-E): 60 Ncm torque and 50,000 mPa·s viscosity ceiling fully exploit the paddle's high-viscosity capability |
| Mounting | Feed-through chuck on chassis (tool-less tightening / loosening) |
| Stainless equivalent | IPS2050-P-S3 (paddle w/flat holes stainless, $172.00; for aqueous / mild-solvent workflows) |
| PTFE family sister SKUs | IPS2050-P-T1 (one-line), IPS2050-P-T2 (centrifugal), IPS2050-P-T4 (4-arm) |
| List price | $172 |
Why a PTFE Paddle: Aggressive-Chemistry High-Viscosity Mixing
The paddle-with-flat-holes geometry delivers larger swept area per revolution than propeller-class impellers, generating higher local turbulence for viscous-formulation mixing. The PTFE version of this paddle is the right pick when viscous workflow + aggressive chemistry intersect, for example, paste-class semi-solid formulations involving aggressive solvents, or high-viscosity oxidizing-chemistry blends.
Pick the PTFE paddle (IPS2050-P-T3) when:
- Workflow involves higher-viscosity formulations (>1,000 mPa·s) AND aggressive chemistry (DMSO / DMF / halogenated solvents / strong acid / base)
- Aggressive-solvent paste-class semi-solid mixing at pilot-batch scale
- Strong-acid or strong-base viscous formulation prep
- Oxidizing-chemistry semi-solid prep where stainless would corrode AND viscosity is too high for propeller-class impellers
Pair preferentially with the OS-40L (IPS2050-40 / -40-E), the 60 Ncm torque and 50,000 mPa·s viscosity ceiling fully exploit the paddle's high-viscosity capability. The OS-20L (40 Ncm, 10,000 mPa·s) handles the lower end of the paddle's envelope.
Stainless vs PTFE Decision Framework: Paddle Pair
| Sample chemistry × viscosity | Material | SKU | List price |
| Aqueous, mild solvents, neutral-pH × high viscosity | Stainless | IPS2050-P-S3 | $172.00 |
| Aggressive solvents, strong acid / base × high viscosity | PTFE | IPS2050-P-T3 (this product) | $172 |
IPS2050 PTFE Family Flow-Pattern Comparison
| SKU | Geometry | Flow pattern | Best viscosity range |
| IPS2050-P-T1 | One-line | Axial | Low (<1,000 mPa·s) |
| IPS2050-P-T2 | Centrifugal | Radial | Low–medium |
| IPS2050-P-T3 (this product) | Paddle w/flat holes | Mixed turbulent | Medium–high (1,000–50,000 mPa·s). Pair with OS-40L |
| IPS2050-P-T4 | 4-arm | High-coverage axial-radial | Low–medium (general-purpose) |
Application Profile
Aggressive-solvent paste-class formulations. Pharmaceutical semi-solid prep involving DMSO / DMF carriers, organic-extraction paste-class workflows.
Strong-acid concentrated formulation prep. Viscous acid-bearing formulations at pilot scale where the paddle's coverage is needed and stainless is incompatible.
Strong-base viscous formulation. Concentrated NaOH / KOH semi-solid formulations.
Oxidizing-chemistry viscous prep. Peroxide-bearing or oxidizing-agent-bearing semi-solid mixtures.
Cosmetic and personal-care reactive-ingredient creams. High-viscosity creams or gels with reactive ingredients (retinoids, glycolic / salicylic acid systems, peroxide-bearing formulations).
Industrial-process viscous-feed aggressive-chemistry prep. Process-development workflows where viscous feed streams contain aggressive chemistries.
Ordering & Configuration
Pair with OS-40L chassis (recommended). Confirm OS-40L (IPS2050-40 / -40-E) inventory at order. The paddle is most effective on the higher-torque chassis.
Pair with PTFE family for full chemical-resistance coverage. Labs running diverse aggressive-chemistry / mixed-viscosity workflows benefit from the full T1-T4 PTFE inventory.
Confirm at quote: chassis pairing (OS-40L recommended), sample-chemistry compatibility justification, workflow viscosity range, and lead time.
Warranty: Per Benchmark Industrial standard accessory terms. Confirm at quote.
IPS2050 PTFE / Teflon paddle selection: viscosity-axis decision:
- IPS2050-P-T1: One-line propeller, low-viscosity axial flow (aggressive chemistry)
- IPS2050-P-T2: Centrifugal impeller, low-medium-viscosity radial flow (aggressive chemistry)
- IPS2050-P-T3 (this product): Paddle w/flat holes, medium-high-viscosity mixed turbulence (aggressive chemistry). Pair with OS-40L
- IPS2050-P-T4: 4-arm general-purpose (aggressive chemistry workhorse)
Pick the PTFE paddle for high-viscosity aggressive-chemistry formulation work; stainless equivalent (IPS2050-P-S3) covers aqueous / mild-solvent high-viscosity workflows at lower price point.
