The IPD9600-15PTFB is the 15 mm PTFE-coated steel-core grinding ball for the Benchmark Industrial IPD9600 BeadBlaster 96 Ball Mill Homogenizer — sold per ball at $101. The composite design pairs a dense steel core (provides kinetic energy comparable to solid stainless steel beads) with a PTFE (Teflon) outer coating (provides chemical resistance and reduces metal-ion leaching from sample contact with the bead surface).
Key Specifications
| SKU | IPD9600-15PTFB |
| Type | PTFE-coated steel-core grinding ball (composite) |
| Bead diameter | 15 mm |
| Material | Steel core + PTFE outer coating |
| Pack quantity | Each |
| Compatible chassis | IPD9600 BeadBlaster 96 |
| Compatible vessel | Typically 25–35 mL grinding jars |
| Sister 15 mm SKU | IPD9600-15ZOB (15 mm zirconium oxide, $101.00 — fully non-metallic alternative) |
| Companion PTFE grinding jar | IPD9600-35PTFE (35 mL PTFE jar, set of 2, $2,477) for fully PTFE-contact workflow |
| List price | $101 |
Why PTFE Steel-Core — Best of Both Worlds
The PTFE steel-core composite design addresses a trade-off in bead-mill workflows:
| Material | Density / kinetic energy | Chemical resistance | Metal contamination |
| Solid stainless steel (IPD9600-10BS / -25BS) | High | Moderate (resistant to most aqueous workflows) | Yes (Fe / Cr / Ni leaching) |
| Solid zirconium oxide (IPD9600-15ZOB) | Lower (3.85 g/cm³) | Excellent | None |
| Solid tungsten carbide (IPD9600-10TCB) | Highest (15 g/cm³) | Moderate | Yes (W / Co leaching) |
| PTFE steel-core (this product) | High (steel core ~8 g/cm³) | Excellent (PTFE outer) | Reduced (PTFE coating isolates steel from sample) |
Pick the PTFE steel-core ball when:
- Workflow is chemically aggressive (strong acid / base / organic solvent / surfactant) where solid stainless steel bead surface would corrode
- Metal-leaching reduction matters but the workflow can't accept zirconium oxide's lower kinetic energy
- Chemical-compatibility flexibility — PTFE is broadly compatible with most lab chemistries
Trade-off: PTFE coating may wear over many cycles, exposing the steel core. Service life is shorter than solid bead alternatives; replacement procurement is expected periodic.
Grinding-Ball Material Selection Decision Tree
| Material | Best for | Cost |
| Stainless steel (IPD9600-10BS / -25BS) | Standard tough-tissue / bulk workflows | $3-$101.00/ball |
| PTFE steel-core (this product, -15PTFB) | Chemically aggressive workflows; reduced metal leaching | $101/ball |
| Zirconium oxide (IPD9600-15ZOB) | Metal-free workflows; trace-metal analysis | $101.00/ball |
| Tungsten carbide (IPD9600-10TCB) | Hardest samples | $33/ball |
Application Profile
Chemically aggressive sample-prep workflows — strong-acid digestion sample prep, organic solvent extraction sample prep where solid stainless steel bead surface would degrade.
Reduced-metal-contamination workflows — workflows where some trace-metal contamination is acceptable but solid stainless steel level is excessive.
Polymer / chemical sample prep — workflows where chemical compatibility with sample matrix matters.
Method-development workflows — protocol-development workflows comparing bead-coating effects on extraction yield + chemical compatibility.
Multi-investigator facility procurement — facilities running mixed chemical-aggressive vs standard workflows benefit from PTFE-coated bead inventory alongside stainless steel.
Replacement procurement — periodic replacement as PTFE coating wears.
Ordering & Configuration
Pair with chassis + grinding jar. Confirm IPD9600 BeadBlaster 96 chassis + appropriate grinding jar inventory.
Companion PTFE jar. For fully PTFE-contact workflow, pair with IPD9600-35PTFE 35 mL PTFE grinding jar ($2,477 / set of 2).
Service life expectation. PTFE coating wears over time; plan for periodic ball replacement.
Confirm at quote: chassis pairing (IPD9600 in inventory), workflow chemical-aggressiveness, jar pairing (IPD9600-35PTFE for fully PTFE workflow), and lead time.
Warranty: Per Benchmark Industrial standard consumable terms — confirm at quote.
Benchmark Industrial IPD9600 grinding-ball family (see IPD9600-25BS family table for full material × size matrix).
Pick the 15 mm PTFE steel-core ball for chemically aggressive workflows; sister zirconium oxide (IPD9600-15ZOB) for fully metal-free workflows; sister stainless steel (IPD9600-10BS / -25BS) for standard workflows.
