The IPS2050-P-T1 is the one-line PTFE (Teflon) propeller in the IPS2050 overhead stirrer accessory line, the chemical-resistant equivalent of the stainless steel IPS2050-P-S1 sister, sold at $172 ($62 premium over the $172.00 stainless version). Same axial flow pattern, different material: PTFE construction extends mixing-accessory chemistry compatibility to aggressive solvents, high-acid, high-base, and oxidizing chemistries that would corrode stainless steel.
Key Specifications
| SKU | IPS2050-P-T1 |
| Type | One-line propeller, PTFE (Teflon) |
| Flow pattern | Axial flow (vertical movement through vessel) |
| 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-S1 (one-line stainless, $172.00; for aqueous / mild-solvent / neutral-pH workflows) |
| PTFE family sister SKUs | IPS2050-P-T2 (centrifugal), IPS2050-P-T3 (paddle w/flat holes), IPS2050-P-T4 (4-arm) |
| List price | $172 |
Why PTFE: Chemical Resistance Step-Up
PTFE (polytetrafluoroethylene, sold under the DuPont brand name Teflon) is the standard material for laboratory mixing accessories that must contact aggressive chemistries. Stainless steel, even 316L, corrodes when exposed to strong acids (HCl, HNO3, H2SO4 at concentration), strong bases (concentrated NaOH at elevated temperature), halogenated solvents (chloroform, dichloromethane in long-duration workflows), and oxidizing chemistries. PTFE is inert to nearly all common laboratory chemistries, making it the default escalation when stainless compatibility is uncertain or known-incompatible.
Pick the PTFE one-line propeller (IPS2050-P-T1) when:
- Sample chemistry includes aggressive organic solvents (DMSO, DMF, chloroform, dichloromethane, halogenated solvents in long-duration mixing)
- High-acid chemistry (concentrated HCl, HNO3, H2SO4, glacial acetic acid)
- High-base chemistry (concentrated NaOH, KOH at elevated temperature)
- Oxidizing chemistries (chromic acid, hot concentrated nitric, peroxide-bearing workflows)
- Workflow is axial-flow particulate-suspension at chemical-resistance-required scale
Pick the stainless equivalent (IPS2050-P-S1) for aqueous / mild-solvent / neutral-pH workflows where the $62 PTFE premium is unjustified.
PTFE vs Stainless Pricing: One-Line Pair
| Material | SKU | List price | Premium over stainless |
| Stainless steel | IPS2050-P-S1 | $172.00 | N/A |
| PTFE / Teflon (this product) | IPS2050-P-T1 | $172 | +$62 (~56% premium) |
The PTFE premium reflects manufacturing cost (PTFE is more expensive than stainless raw stock and harder to machine to dimensional tolerance).
IPS2050 PTFE Propeller Family
| SKU | Geometry | Flow pattern | List price |
| IPS2050-P-T1 (this product) | One-line | Axial | $172 |
| IPS2050-P-T2 | Centrifugal | Radial | $172 |
| IPS2050-P-T3 | Paddle w/flat holes | Mixed turbulent | $172 |
| IPS2050-P-T4 | 4-arm | High-coverage axial-radial | $172 |
All four PTFE variants are priced identically. The geometry choice is a flow-pattern decision, not a cost decision.
Application Profile
Aggressive-solvent organic chemistry workflows. Synthesis labs, organic-extraction workflows, halogenated-solvent purification at the 5β40 L vessel scale.
Strong-acid and strong-base formulation prep. Pharmaceutical, industrial, and process-development workflows involving concentrated mineral acids or strong bases.
Oxidizing-chemistry workflows. Chromic acid cleaning, peroxide-bearing reaction prep, hot concentrated nitric acid workflows.
Cosmetic and personal-care formulations with aggressive ingredients. Surfactants, salicylic acid, glycolic acid, and other reactive cosmetic ingredients.
Pharmaceutical excipient prep with reactive ingredients. Certain semi-solid formulations, oxidizing-agent-bearing matrices.
Method-development workflows. Protocol-development where chemical-resistance is part of method-validation requirements.
Multi-investigator shared chassis. Facilities maintaining both stainless and PTFE propeller inventory for protocol-flexibility across mixed chemistry workflows.
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 aggressive-chemistry workflows benefit from inventorying multiple PTFE geometries (-T1 axial, -T2 radial, -T3 mixed) for protocol-flexibility.
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 (this product): 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
- IPS2050-P-T4 (4-arm, general-purpose) aggressive-chemistry workhorse
Pick the PTFE one-line propeller for axial-flow workflows in aggressive-chemistry conditions; stainless equivalent (IPS2050-P-S1) covers aqueous / mild-solvent workflows at lower price point.
