The B3220-250 is the smallest capped Erlenmeyer in the hybex B3220 family — 250 mL × 12 flasks per pack at $286 ($23.87 per flask). Same integrated GL45 cap design as the larger B3220 sisters, scaled to the 250 mL volume for small-volume capped shake-flask workflows.
For full chemistry rationale (capped vs open-mouth Erlenmeyer decision, sealed-storage workflows, cap-accessory ecosystem), see the B3220-1000 (1000 mL) anchor page.
Key Specifications
| SKU | B3220-250 |
| Type | hybex Erlenmeyer flask with integrated GL45 cap |
| Volume | 250 mL (smallest in B3220 family) |
| Pack quantity | 12 flasks per pack |
| Per-flask cost | $23.87 ($15.11 premium over uncapped B3110-250 at $8.76) |
| Cap thread | GL45 |
| Sister B3220 SKUs | B3220-500 (500 mL × 6/pk, $286.00), B3220-1000 (1000 mL × 6/pk, $243), B3220-2000 (2000 mL × 1/each, $89) |
| Sister uncapped B3110 SKU | B3110-250 (250 mL open-mouth, 12/pk, $105) |
| List price | $286 |
When to Pick the 250 mL Capped Erlenmeyer
Pick the B3220-250 when:
- Workflow uses small-volume capped shake-flask cultures requiring sealed-container storage
- Cell culture starter / seed cultures where the same flask serves both as culture vessel and storage container
- Sterile transfer protocols at small-volume scale
- Multi-investigator shared facility small-volume capped flask procurement (12-flask pack)
Stay with B3110-250 (uncapped, $8.76/flask) when standard open-mouth shake-flask workflow is the routine — $15.11 saving per flask when the integrated cap isn't required.
B3220 Capped Erlenmeyer Family — Pack-Size
| SKU | Volume | Pack | Per-flask cost | List price |
| B3220-250 (this product) | 250 mL | 12/pk | $23.87 | $286 |
| B3220-500 | 500 mL | 6/pk | $29.79 | $286.00 |
| B3220-1000 | 1000 mL | 6/pk | $40.50 | $243 |
| B3220-2000 | 2000 mL | 1/each | $88.67 | $89 |
Ordering & Configuration
Pair with cap accessories per workflow — see B3220-1000 parent for full pairing matrix.
Confirm at quote: flask material, cap material, autoclave protocol, and lead time.
Warranty: Per Benchmark Scientific standard consumable terms.
hybex B3220 capped Erlenmeyer family — pick by volume; see B3220-1000 anchor for full capped-vs-open-mouth decision detail.
