The Z446-750-A10 is an 18-position 6–10 mL Vacutainer-style tube insert for the Hermle Z446-750-BUK round bucket on the Z446-750-AC 4-place swing-out rotor (Z446 / Z446-K chassis) — sold as a 2-pack. Each insert holds 18 × Vacutainer tubes; the 4-bucket rotor configuration takes 2 packs (4 inserts) for full symmetric loading, delivering 72 × 10 mL Vacutainer tubes per cycle — the highest 10 mL Vacutainer per-cycle throughput in the Z446 family. The Z446-750-AC swing-out rotor reaches 19.2 cm radius (the largest in the Hermle catalog), supporting institutional-scale clinical-blood-component prep on a single chassis.
Key Specifications
| SKU | Z446-750-A10 |
| Type | Tube insert — 18 × 6–10 mL Vacutainer-style |
| Pack quantity | 2 inserts per SKU (full 4-bucket configuration takes 2 units = 4 inserts) |
| Per-insert capacity | 18 × 6–10 mL Vacutainer-style tubes |
| Per-cycle throughput (full configuration) | 72 × 10 mL Vacutainer tubes per cycle |
| Tube format | 6–10 mL Vacutainer-style blood collection (16 mm OD, 75–100 mm length) |
| Compatible bucket | Z446-750-BUK (round bucket; with Z446-750-LID PC-Screw cap for sealable mode) |
| Compatible rotor | Z446-750-AC (4-place swing-out rotor body; or Z446-750 swing-out rotor with buckets included) |
| Compatible chassis | Z446, Z446-K (refrigerated), and -E voltage variants |
| Max. operating speed (with insert + tubes) | Per Z446-750-AC spec — 4,000/4,500 rpm at 3,434–4,346 × g maximum (speed varies with chassis power configuration) |
| Max. radius | 19.2 cm (0.3 cm radius correction with this insert) |
| Temperature at max speed (refrigerated chassis) | 4 °C |
| Geometry | Swing-out (0–90°) — flat sediment surface |
| List price | $572 (2-pack) |
Compatibility & When to Order This SKU
Insert pairing — Z446-750-BUK round bucket only. Order this SKU when:
- Adding 10 mL Vacutainer-style clinical-blood-tube workflow at institutional scale — order 2 units for full 4-bucket symmetric loading (72 tubes/cycle).
- Hospital reference labs and large clinical-research recruitment — 72 × 10 mL Vacutainer per cycle is sized for hospital-scale and large-cohort recruitment workflows that benefit from the highest per-cycle throughput in the Z446 family.
- Cold-chain clinical-blood prep at scale — when the workflow uses the Z446-K refrigerated chassis at 4 °C max-speed temperature for clinical serum/plasma separation.
- BSL-2 + clinical workflows — combine with the Z446-750-LID for hermetic containment when handling potentially infectious patient samples.
- Replacement inserts if a current set is damaged or worn.
Application Profile
Highest 10 mL Vacutainer throughput in the Hermle catalog. 72 × 10 mL Vacutainer tubes per cycle is the highest per-cycle 10 mL Vacutainer throughput across the Hermle swing-out rotor family — the Z446-750-AC's 19.2 cm max radius (largest in the catalog) accommodates the wide Vacutainer-format insert with high parallel-tube capacity.
4-bucket symmetric loading. All 4 buckets must use matching A10 inserts for symmetric balance.
Per-insert symmetric loading. Within each insert, the 18 tubes should be balanced symmetrically — pair tubes by mass.
Mixed 6 / 8 / 10 mL Vacutainer-style format flexibility. The insert envelope (16 mm OD, 75–100 mm length range) accommodates 6 mL, 8 mL, and 10 mL Vacutainer-style tube formats.
Optional hermetic seal via LID. When combined with the Z446-750-LID (PC-Screw cap), the bucket creates a hermetic envelope for BSL-2 + workflows.
Speed mode toggle. The Z446-750 rotor supports two speed modes (4,000 rpm / 4,500 rpm) selectable per chassis power configuration (per the Z446 brochure footnote: "* The speed of rotor Z446-750 lower by 500 rpm (can be toggled with 20A line)"). Higher RCF (4,346 × g) requires the higher-power chassis mode.
Design Architecture
Hospital reference labs at scale — clinical chemistry and hematology prep workflows handling 72 × 10 mL Vacutainer per cycle at institutional throughput.
Large clinical-research recruitment — recruiting-phase studies that draw 10 mL Vacutainer tubes at high per-day volume on the cold-chain biosafety chassis.
Biobank intake at institutional throughput — biobank workflows handling 10 mL primary collection tubes that need refrigerated centrifugation before aliquot prep for cryostorage.
BSL-2 + clinical-blood prep at scale — patient samples requiring aerosol containment during the spin step, with hermetic sealing via the Z446-750-LID.
Veterinary clinical at institutional scale — institutional veterinary practice or veterinary-research lab throughput in 10 mL Vacutainer-style format.
Cross-format Z446-K core facilities — labs running 10 mL Vacutainer alongside other Z446-750 insert formats benefit from the cross-format insert family.
Ordering & Configuration
4-bucket symmetric loading. All 4 buckets must use matching A10 inserts. Mixed-bucket configurations produce mass asymmetry.
Optional hermetic-seal engagement. When using the Z446-750-LID for biosafety workflows, confirm the lid is fully threaded onto each bucket before each spin.
Tube cap confirmation. All Vacutainer rubber stoppers must be fully seated before spinning at 4,500 rpm.
Z446-750-A10 ships as 2 inserts. 6–10 mL Vacutainer-style tubes are operator-supplied (commodity clinical phlebotomy supplies). The Z446-750-BUK bucket and (optional) Z446-750-LID are sold separately.
Confirm at quote: bucket pairing (Z446-750-BUK in inventory; Z446-750-LID if biosafety required), chassis pairing (Z446 or Z446-K) and power configuration (chassis power line affects max speed mode), tube format (6–10 mL Vacutainer-style), pack count (2 packs for full 4-bucket configuration), workflow drivers (cold-chain, biosafety, institutional throughput), and lead time.
Warranty: 5-Year Hermle warranty (3 years full + 2 years drivetrain) on the inserts.
Z446-750 clinical-blood-tube insert family (Z446-750-AC swing-out rotor on Z446 / Z446-K chassis):
- Z446-750-A10 (this product) — 18 × 6–10 mL Vacutainer (72/cycle, highest in catalog)
- Z446-750-A57 — 27 × 1.8–7 mL pediatric / small-volume blood tubes (108/cycle)
- Z446-750-A15R — 18 × 15 mL (72/cycle)
Match the insert to the workflow's clinical blood-tube format. The Z446-750 platform delivers the highest per-cycle clinical-blood-component prep throughput in the Hermle catalog at 19.2 cm max radius.
