The Z326-15-A5 is a 5 mL tube adapter that drops into the 15 mL tube position on multiple Hermle 15 mL angle rotors — converting a 15 mL workflow position into a 5 mL position without rotor swap. Sold as a 2-pack. The Z326-15 prefix indicates the adapter is part of the Z326-family 15 mL adapter library, but the actual chassis compatibility is broader: the same adapter geometry serves the 15 mL position on Z207-A rotors, Z287-A rotors (Z287-0815, Z287-1215, etc.), and Z326 rotors (Z326-1050 10 × 50 mL angle rotor and others) per the Hermle adapter cross-reference.
Key Specifications
| SKU | Z326-15-A5 |
| Type | Tube adapter — 15 mL position → 5 mL tube |
| Pack quantity | 2 adapters per SKU |
| Tube format accepted | 1 × 5 mL tube (13.5 mm OD, 70–90 mm length) |
| Compatible 15 mL positions | Z207-A 15 mL rotors, Z287-A 15 mL rotors (e.g., Z287-0815, Z287-1215), Z326-1050 (10 × 50 mL angle with 15 mL via this adapter), and other Hermle 15 mL angle rotor positions |
| Compatible chassis | Multiple — Z207, Z287, Z326 family chassis, depending on the host rotor |
| Max. operating speed (with adapter + tube) | Per host rotor spec — varies by chassis pairing |
| List price | $181 (2-pack) |
Compatibility & When to Order This SKU
Cross-chassis adapter — order quantity matches host rotor. The 2-pack quantity is appropriate for paired symmetric loading of 2 positions or as a starter set; for full-rotor 5 mL workflow on 6-, 8-, 10-, or 12-position 15 mL host rotors, order multiple packs.
Order this SKU when:
- Adding 5 mL tube workflow capability to a 15 mL angle rotor on any compatible Hermle chassis — when the workflow benefits from running 5 mL tubes alongside (or instead of) 15 mL tubes on the same rotor.
- Pediatric or small-volume blood-tube workflows when 5 mL Vacutainer-style tubes are the workflow's primary collection format.
- Mixed-format runs — when some positions need 15 mL tubes and others need 5 mL tubes within the same cycle (with adapter symmetry preserved across paired positions).
- Replacement adapters if a current set is damaged or worn.
Why This Adapter Matters
5 mL tube workflows (clinical phlebotomy, pediatric collection, small-volume cell-prep) sit between the 1.5 / 2.0 mL microtube range and the 15 mL conical workhorse range. The Z326-15-A5 adapter lets a 15 mL angle rotor handle 5 mL tubes without the cost and inventory of a dedicated 5 mL rotor — useful when 5 mL workflows are occasional or mixed with the lab's primary 15 mL workflow.
Application Profile
Pediatric clinical-research blood-tube workflows — pediatric blood draws use smaller-volume Vacutainer tubes; the Z326-15-A5 adapter enables pediatric workflow on a 15 mL workhorse rotor.
5 mL clinical-research collection workflows — clinical-research protocols that specify 5 mL collection tubes for the primary collection format.
Veterinary clinical workflows — small-animal blood draws typically fall in the 5 mL or smaller range; the adapter enables veterinary blood-component separation on a 15 mL rotor.
Mixed-volume aliquot prep — when a workflow batches 15 mL primary samples in some positions and 5 mL aliquot tubes in adjacent positions, the adapter handles the smaller-volume tubes within the same cycle.
Educational and teaching labs — clinical-tech curricula using mixed 15 mL and 5 mL teaching formats on the same rotor.
Cross-chassis core-facility consolidation — shared cores running mixed-chassis fleets can stock a single Z326-15-A5 adapter SKU that serves any 15 mL angle rotor.
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 format combinations.
Adapter seat verification. Confirm each adapter is fully seated in its 15 mL position before loading the 5 mL tube.
Tube cap confirmation. All Vacutainer rubber stoppers or screw caps must be fully seated before spinning at the host rotor's max RPM.
Z326-15-A5 ships as 2 adapters. 5 mL tubes are operator-supplied (commodity clinical and pediatric phlebotomy supplies).
Confirm at quote: host rotor (which 15 mL angle rotor will use the adapter), chassis pairing (Z207, Z287, Z326 family), tube format (5 mL Vacutainer-style or round-bottom), 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.
Z326-15 adapter family — cross-chassis 15 mL position adapters:
- Z326-15-A5 (this product) — 1 × 5 mL tube
- Z326-15-A7 — 1 × 7 mL tube
- Z326-15-A20 — 1 × 1.5 / 2.0 mL microtube
Match the adapter to the workflow's smaller-tube format. All three adapters share the 15 mL position envelope and are cross-chassis compatible across Hermle 15 mL angle rotors.
