The Z326-100H-A15S is the 15 mL conical sealable insert for the Hermle Z326-100H sealed bucket on the Z327 / Z327-K chassis 4-place swing-out rotor — sold as a 2-pack. Each insert holds 1 × 15 mL skirted-base conical tube (116 mm length); the 4-bucket rotor configuration takes 2 packs (4 inserts) for full symmetric loading, delivering 4 × 15 mL conical tubes per cycle in hermetically sealed swing-out geometry. The "S" suffix denotes sealable — unlike the standard A15 insert (used without bucket lid), the A15S is engineered to work with the Z326-100H-LID for hermetic 15 mL workflows (BSL-2 + clinical and clinical-research samples requiring aerosol containment).
Key Specifications
| SKU | Z326-100H-A15S |
| Type | Tube insert — 1 × 15 mL conical, sealable |
| Pack quantity | 2 inserts per SKU (full 4-bucket configuration takes 2 units = 4 inserts) |
| Per-insert capacity | 1 × 15 mL conical (skirted-base / Universal format) |
| Per-cycle throughput (full configuration) | 4 × 15 mL conical per cycle |
| Tube format | 15 mL conical, skirted-base / Universal (17 mm OD, 116 mm length) |
| Bucket lid compatibility | Sealable — supports Z326-100H-LID for hermetic envelope |
| Compatible bucket | Z326-100H sealed bucket |
| Compatible chassis | Z327, Z327-K (refrigerated), and -E voltage variants |
| Max. operating speed (with insert + tube) | Per Z326-100H spec — 5,000 rpm at 4,080 × g maximum |
| Max. radius | 14.6 cm (0.7 cm radius correction with this insert) |
| Temperature at max speed (Z327-K refrigerated) | 2 °C |
| Geometry | Swing-out (0–90°) — flat sediment surface |
| List price | $267 (2-pack) |
Compatibility & When to Order This SKU
Insert pairing — Z326-100H sealed bucket only. Order this SKU when:
- BSL-2 + 15 mL conical workflow — patient samples or clinical-research samples requiring aerosol containment during the 15 mL spin step.
- Cold-chain BSL-2 clinical-blood-component prep — when both refrigeration (Z327-K chassis at 2 °C max-speed temperature) AND biosafety containment (sealed bucket envelope) are required for the workflow.
- Hermetic-seal clinical workflows at institutional throughput — 4 sealed 15 mL tubes per cycle.
- Replacement inserts if a current set is damaged or worn.
Application Profile
Sealable insert mode — distinct from the A15. The A15S is engineered to work with the Z326-100H-LID, creating a hermetic envelope around each 15 mL tube. The standard A15 insert (different SKU) does not support the bucket lid and is used in non-sealable mode. Per the brochure: A15 is marked "* only without bucket lid"; A15S has no such restriction — the sealable mode is its design intent.
Skirted-base conical compatibility. The A15S envelope is dimensioned for the 17 mm OD × 116 mm length skirted-base / Universal format — a slightly different geometry than standard Falcon/Corning conical (~120 mm length). Verify tube format at order if using non-standard 15 mL tube suppliers.
4-bucket symmetric loading. All 4 buckets must use matching A15S inserts for symmetric balance.
Design Architecture
Cold-chain BSL-2 + clinical blood-component prep at 15 mL — clinical-research and hospital lab workflows handling potentially infectious patient samples in 15 mL conical format that require both refrigeration and aerosol containment.
Viral and bacterial prep workflows at 15 mL — viral RNA extraction, bacterial cell-pellet prep, infectious-agent culture aliquots in 15 mL working volume requiring biosafety containment during centrifugation.
Cell-culture aliquoting from BSL-2 stock cultures — when cell-line work involves BSL-2 + agents and the 15 mL aliquoting step needs hermetic containment.
Clinical-research recruitment workflows handling infectious disease cohorts — patient sample workflows for infectious disease research (HIV, TB, hepatitis, respiratory pathogens) that require containment from collection through cryostorage.
Cross-format BSL-2 Z327-K chassis — labs running mixed BSL-2 workflows across multiple tube formats (10 mL Vacutainer, 15 mL conical, 5/7 mL clinical) on the same chassis benefit from stocking the sealable insert variants together.
Ordering & Configuration
4-bucket symmetric loading. All 4 buckets must use matching A15S inserts.
Hermetic-seal engagement. Per Hermle service instructions, the Z326-100H-LID must be fully engaged on each bucket before each spin to maintain the hermetic envelope at 4,080 × g.
Tube cap confirmation. All conical tubes must be securely capped before spinning at 5,000 rpm — biosafety containment depends on both the rotor's hermetic seal and the individual tube cap integrity.
Z326-100H-A15S ships as 2 inserts. 15 mL skirted-base conical tubes are operator-supplied. The Z326-100H bucket and Z326-100H-LID are sold separately.
Confirm at quote: bucket pairing (Z326-100H + Z326-100H-LID in inventory), chassis pairing (Z327 or Z327-K), tube format (15 mL skirted-base / Universal, 116 mm length), workflow biosafety driver (BSL-2 + workflow confirms the sealable A15S vs the non-sealable A15), pack count (2 packs for full 4-bucket configuration), and lead time.
Warranty: 5-Year Hermle warranty (3 years full + 2 years drivetrain) on the inserts. Hermetic-seal interface is a planned-inspection item for biosafety workflows.
Z326-100H 15 mL insert family (Z327 / Z327-K chassis):
- Z326-100H-A15S (this product) — 1 × 15 mL conical, sealable mode (BSL-2 + biosafety)
- Z326-100H-A15 — 2 × 15 mL conical Falcon-style, non-sealable mode (higher per-cycle throughput)
- Z326-100H-A15L — 1 × 15 mL long-tube (130 mm length), non-sealable
- Z326-100H-A15R — 15 mL round-bottom variant
Pick the A15S when biosafety containment is required; pick the A15 when standard non-sealed throughput matters more.
