The IPD4400-B400F1 is the lateral / side-filter blender bag for the Benchmark Industrial BenchMasher 400 Paddle Blender (IPD4400) — 400 mL × 70 µm bag with integrated lateral nylon filter, sold as 500-pack. The side-filter format integrates the filtration step into the blending step — homogenate is filtered through the lateral nylon filter and recovered as filtrate. This is the standard format for pathogen / microbial detection workflows in food and water testing where the filtrate is the analytical sample.
Key Specifications
| SKU | IPD4400-B400F1 |
| Type | Sterile blender bag — lateral (side) nylon filter |
| Pack quantity | 500 bags (10 packs of 50) |
| Volume | 400 mL |
| Wall thickness | 70 µm |
| Dimensions | 300 × 190 mm |
| Filter type | Lateral (side) nylon filter — integrated into bag |
| Compatible chassis | IPD4400 BenchMasher 400 |
| Sister bag SKUs | IPD4400-B400 (standard, no filter, $101), IPD4400-B400F2 (full nylon filter, $503) |
| List price | $409 (500 bags = $0.82 per bag) |
Why Lateral / Side Filter — Filtrate-Side Sample Recovery
The lateral filter is positioned on one side of the bag, separating the bag interior into:
- Sample side — where the bulk sample is loaded and the paddles strike during homogenization
- Filtrate side — where the filtrate accumulates after passing through the lateral filter during homogenization
Workflow advantage for pathogen / microbial detection:
- Sample loaded into bag → paddles homogenize during blending cycle
- Liquid phase + small particles pass through the lateral nylon filter (70 µm) into the filtrate side
- Bulk solids and large particles remain on the sample side
- Operator opens bag, pipettes filtrate from filtrate side as the analytical sample
- Pathogens / microbial cells are in the filtrate (small enough to pass the filter); bulk food / water-filter material is excluded
Cleaner analytical sample — the filtration step is integrated into the blending workflow, eliminating the need for a separate post-blending filtration step.
When to Pick F1 (Side Filter) vs F2 (Full Filter) vs No Filter
| SKU | Filter geometry | Filtrate-side recovery | Best for |
| IPD4400-B400 | None | Manual filtration step required downstream | Standard homogenization workflows |
| IPD4400-B400F1 (this product) | Lateral / side filter | Filtrate accumulated on side after blending; operator pipettes from filtrate side | Pathogen / microbial detection where 70 µm filter excludes bulk solids |
| IPD4400-B400F2 | Full nylon filter | Full-filter sample recovery | Workflows requiring more thorough filtration before recovery |
Application Profile
Pathogen detection in food — Salmonella, E. coli, Listeria, and other foodborne-pathogen detection workflows where the filtrate is plated / cultured / qPCR-tested.
Microbial detection in water — water-filter sample homogenization where the filtrate is analyzed for microbial content.
Regulated food / water testing labs — labs running standardized food / water pathogen panels benefit from the integrated-filter workflow.
QuEChERS-class pesticide / contaminant analysis — workflows where the filter integrates with downstream extraction.
Forensic biological sample analysis — filtrate recovery from bulk biological samples for downstream DNA / RNA extraction.
Multi-sample workflow at scale — production food / water testing facilities consume filter-bags at high rate; 500-pack supports several months of routine use.
Ordering & Configuration
Per-sample workflow consumable. Each homogenization run consumes one bag.
Pair with chassis inventory. Confirm IPD4400 BenchMasher 400 chassis is in inventory.
Pair with workflow protocol. Confirm the workflow's pathogen / microbial detection protocol specifies lateral-filter (F1) vs full-filter (F2) bag format — typical Salmonella / E. coli / Listeria food-testing protocols specify the F1 lateral-filter format.
Storage. Bags ship sterile; store in original packaging at room temperature.
Confirm at quote: chassis pairing, workflow protocol filter-format requirement, 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 (this product) — Lateral / side nylon filter, 500/pk ($409, $0.82/bag)
- IPD4400-B400F2 — Full nylon filter, 500/pk ($503, $1.01/bag)
Pick the F1 lateral-filter bag for pathogen / microbial detection workflows where the filtrate is the analytical sample; step to F2 for full-filter workflows or to standard B400 for non-filter workflows.
