The IPD4400-B400F2 is the full-nylon-filter blender bag for the Benchmark Industrial BenchMasher 400 Paddle Blender (IPD4400) — 400 mL × 70 µm bag with full nylon filter integration, sold as 500-pack. The full-filter format provides most thorough integrated filtration — homogenate is fully filtered through the nylon filter before recovery. Highest-cost variant in the BenchMasher 400 bag family ($1.01 per bag vs $0.82 for F1 lateral-filter or $0.20 for standard).
Key Specifications
| SKU | IPD4400-B400F2 |
| Type | Sterile blender bag — full nylon filter |
| Pack quantity | 500 bags (10 packs of 50) |
| Volume | 400 mL |
| Wall thickness | 70 µm |
| Dimensions | 300 × 190 mm |
| Filter type | Full nylon filter — fully integrated into bag, all homogenate passes through filter |
| Compatible chassis | IPD4400 BenchMasher 400 |
| Sister bag SKUs | IPD4400-B400 (standard, no filter, $101), IPD4400-B400F1 (lateral filter, $409) |
| List price | $503 (500 bags = $1.01 per bag) |
Why Full Filter — Most Thorough Integrated Filtration
Full-filter geometry vs lateral filter (F1):
| Feature | F1 Lateral / Side Filter | F2 Full Filter (this product) |
| Filter coverage | One side of the bag | Full bag interior |
| Filtration thoroughness | Side-recovery; some bulk solids may carry over to filtrate side | Most thorough — all homogenate passes through filter before recovery |
| Per-bag cost | $0.82 | $1.01 (~25 % premium) |
| Best for | Standard pathogen / microbial detection (typical regulated food testing) | Workflows requiring most thorough particulate exclusion in filtrate |
Pick the F2 full-filter when:
- Workflow requires most thorough filtration — analytical method is sensitive to bulk-solid carryover
- Highest-stakes regulated workflows — pharmaceutical / clinical-research where filter integrity matters more than bag cost
- Forensic chain-of-custody workflows — where filter-integrated workflow simplifies sample-prep documentation
Pick the F1 lateral-filter (IPD4400-B400F1) when: standard pathogen / microbial detection workflow is sufficient; the F1 format is the default for typical Salmonella / E. coli / Listeria food-testing protocols.
Application Profile
Highest-stakes pathogen detection workflows — workflows where regulated standards require most thorough integrated filtration.
Pharmaceutical sample-prep workflows — pharma / biotech sample homogenization with filtration integration.
Forensic biological sample analysis — filter-integrated workflow for chain-of-custody integrity.
Method-development workflows — protocol-development where filter-format optimization matters; F2 supports most-thorough-filtration baseline characterization.
Production sample-prep facilities — facilities running highest-stakes workflows benefit from the F2 format despite the per-bag cost premium.
Ordering & Configuration
Per-sample workflow consumable. Each homogenization run consumes one bag.
Pair with chassis inventory. Confirm IPD4400 BenchMasher 400 chassis is in inventory.
Confirm filter-format requirement at order. Workflow protocols typically specify F1 (lateral) or F2 (full) filter format; confirm before bulk procurement to avoid format mismatch.
Storage. Bags ship sterile; store in original packaging at room temperature.
Confirm at quote: chassis pairing, workflow protocol filter-format requirement (F1 vs F2), pack-quantity needs, and lead time.
Warranty: Per Benchmark Industrial standard consumable terms — confirm at quote.
Benchmark Industrial BenchMasher 400 blender bag family:
- IPD4400-B400 — Standard, no filter, 500/pk ($101, $0.20/bag)
- IPD4400-B400F1 — Lateral / side nylon filter, 500/pk ($409, $0.82/bag)
- IPD4400-B400F2 (this product) — Full nylon filter, 500/pk ($503, $1.01/bag)
Pick the F2 full-filter bag for highest-thoroughness filtration workflows; step to F1 lateral-filter for standard pathogen / microbial detection or to B400 standard for non-filter workflows.
