The Z326-50-A15 is a 15 mL conical tube adapter for the 50 mL conical position on Hermle Z326 / Z327 family 50 mL conical angle rotors (Z326-1050 10 × 50 mL angle rotor and similar) — sold as a 2-pack. The adapter converts a 50 mL conical workflow position into a 15 mL conical position without rotor swap, useful when 50 mL is the chassis's primary configuration but occasional 15 mL workflow arises. Note the geometry distinction: this adapter is for the conical 50 mL rotor envelope; for round 50 mL rotor envelopes, use the sister adapter Z326-50-A15R (different envelope geometry).
Key Specifications
| SKU | Z326-50-A15 |
| Type | Tube adapter — 50 mL conical position → 15 mL conical |
| Pack quantity | 2 adapters per SKU |
| Tube format accepted | 1 × 15 mL conical (17 mm OD, 120 mm length) |
| Compatible host rotor envelope | 50 mL conical angle rotor positions on Z326 / Z327 family chassis (e.g., Z326-1050) |
| Compatible chassis | Z326, Z326-K (refrigerated), Z327, Z327-K (refrigerated), and -E voltage variants |
| Max. operating speed (with adapter + tube) | Per host rotor spec — for Z326-1050: 7,500 rpm at 8,141 × g maximum |
| List price | $201 (2-pack) |
Compatibility & When to Order This SKU
Adapter pairing — 50 mL conical rotor positions only. The Z326-50-A15 is engineered for the conical 50 mL rotor envelope. For 50 mL round-bottom rotors (Z326-0650-HS and similar), use the sister adapter Z326-50-A15R instead — different envelope geometry.
Order this SKU when:
- Adding 15 mL conical workflow capability to a 50 mL conical rotor on a Z326 / Z327 chassis — order pack count to match the host rotor's position count (10-position rotor = 5 packs for full configuration; lower for partial loading).
- Mixed 50 / 15 mL workflow consolidation — when the lab's primary 50 mL conical workflow on the Z326 / Z327 chassis includes occasional 15 mL conical processing.
- Replacement adapters if a current set is damaged or worn.
Conical vs Round 50 mL Rotor Envelopes — Why Two Adapter SKUs
Hermle 50 mL angle rotors split into two envelope geometries:
- Conical 50 mL rotors (e.g., Z326-1050 10 × 50 mL angle) — engineered for Falcon-style conical tubes; the position envelope tapers
- Round 50 mL rotors (e.g., Z326-0650-HS 6 × 50 mL angle round) — engineered for round-bottom tubes; the position envelope is cylindrical
A 15 mL adapter for one envelope doesn't fit the other — hence the Z326-50-A15 (conical envelope) and Z326-50-A15R (round envelope) sister SKUs. Confirm host rotor envelope before ordering.
Application Profile
Cold-chain mixed 50 mL / 15 mL workflow consolidation — when the Z326-K / Z327-K refrigerated chassis primarily runs 50 mL conical workflows but the protocol includes 15 mL conical aliquot prep, the adapter delivers 15 mL workflow without rotor swap.
Cell-culture pellet recovery in 15 mL conical — pelleting cells from 15 mL suspension batches at the host rotor's RCF range on the cold-chain chassis.
Density-gradient prep in 15 mL — Ficoll, Percoll, sucrose-gradient prep at 15 mL working volume on a chassis configured for higher-RCF 50 mL workflows.
Educational and clinical-research teaching — teaching labs that handle both 50 mL conical and 15 mL conical exercises on the same chassis benefit from the adapter approach.
Cross-format Z326-K / Z327-K core facilities — shared cores running both 50 mL conical and 15 mL conical workflows on the same chassis can stock the adapter for workflow-specific configuration.
Ordering & Configuration
Symmetric adapter loading. Pair adapter positions across the rotor by tube mass; all positions in a balanced pair must use matching adapter + tube combinations.
Adapter seat verification. Confirm each adapter is fully seated in its 50 mL conical position before loading the 15 mL tube.
Tube cap confirmation. All 15 mL conical tubes must be securely capped before spinning at the host rotor's max RPM.
Z326-50-A15 ships as 2 adapters. 15 mL conical tubes are operator-supplied (commodity Falcon / Corning / equivalent formats).
Confirm at quote: host rotor (which 50 mL conical angle rotor will use the adapter — Z326-1050 or other), chassis pairing (Z326, Z326-K, Z327, Z327-K), envelope confirmation (conical 50 mL rotor; round-bottom rotor uses A15R instead), pack count needed for the host rotor's position count, and lead time.
Warranty: 5-Year Hermle warranty (3 years full + 2 years drivetrain) on the adapters.
Z326-50 adapter family — 50 mL position adapters by envelope:
- Z326-50-A15 (this product) — 15 mL conical for conical 50 mL rotors
- Z326-50-A15R — 15 mL conical for round 50 mL rotors (different envelope geometry)
- Z326-50-A30 — 30 mL round for round 50 mL rotors
- Z326-50-B15 / B15R / B15HS — 15 mL round-bottom adapter variants (see family pages for envelope-specific selection)
Match the adapter to the host rotor's envelope geometry (conical vs round) before ordering.
