The Z327-200-A57 is an 8-position 1.8–7 mL Vacutainer-style pediatric blood tube insert for the Hermle Z327-200-BUK swing-out bucket on the Z327 / Z327-K chassis 4-place rotor — sold as a 2-pack. Each insert holds 8 × pediatric / small-volume Vacutainer tubes; the 4-bucket rotor configuration takes 2 packs (4 inserts) for full symmetric loading, delivering 32 × 1.8–7 mL Vacutainer tubes per cycle — the highest per-cycle pediatric / small-volume blood-tube throughput in the Z327-200 insert family. Sized for institutional pediatric clinical-blood-component prep at scale.
Key Specifications
| SKU | Z327-200-A57 |
| Type | Tube insert — 8 × 1.8–7 mL Vacutainer-style |
| Pack quantity | 2 inserts per SKU (full 4-bucket configuration takes 2 units = 4 inserts) |
| Per-insert capacity | 8 × 1.8–7 mL Vacutainer-style tubes |
| Per-cycle throughput (full configuration) | 32 × 1.8–7 mL Vacutainer tubes per cycle |
| Tube format | 1.8 mL, 5 mL, or 7 mL clinical Vacutainer-style (~13 mm OD, 75–100 mm length) |
| Compatible bucket | Z327-200-BUK (with Z327-200-LID for hermetic seal) |
| Compatible rotor | Z327-200 (or Z327-200-AC rotor body without buckets) |
| Compatible chassis | Z327, Z327-K (refrigerated), and -E voltage variants |
| Max. operating speed (with insert + tubes) | Per Z327-200 spec — 5,000 rpm at 4,136 × g maximum |
| Max. radius | 14.8 cm (0.2 cm radius correction with this insert) |
| Geometry | Swing-out (0–90°) — flat sediment surface |
| List price | $288 (2-pack) |
Compatibility & When to Order This SKU
Insert pairing — Z327-200-BUK swing-out bucket only. Order this SKU when:
- Adding pediatric / small-volume clinical blood-tube workflow to an existing Z327 / Z327-K + Z327-200 install — order 2 units for full 4-bucket symmetric loading (32 tubes/cycle).
- Institutional pediatric clinical-blood-component prep — hospital pediatric labs and pediatric clinical-research workflows that batch many small-volume samples per cycle.
- Cold-chain pediatric clinical workflows on the Z327-K refrigerated chassis.
- BSL-2 + small-volume blood-tube workflows with the Z327-200-LID engaged for hermetic containment.
- Replacement inserts if a current set is damaged or worn.
Application Profile
Highest per-cycle small-volume throughput on Z327-200. 32 × 1.8–7 mL Vacutainer tubes per cycle is the highest per-cycle small-volume blood-tube throughput in the Z327-200 insert family — sized for hospital-pediatric and clinical-research workflows where pediatric specimen volume is substantial.
Tube format flexibility. The 13 mm OD, 75–100 mm length envelope accommodates 1.8 mL, 5 mL, and 7 mL Vacutainer-style tube formats — a single insert SKU serves the typical pediatric and small-volume adult tube range.
4-bucket symmetric loading. All 4 buckets must use matching A57 inserts for symmetric balance.
Optional hermetic seal via LID. When combined with the Z327-200-LID, the bucket creates a hermetic envelope for BSL-2 + small-volume blood-tube workflows.
Design Architecture
Institutional pediatric clinical-blood-component prep at 32 tubes per cycle — hospital pediatric labs and pediatric reference labs that batch institutional volume of pediatric samples per cycle for serum/plasma separation.
Pediatric infectious-disease cohort prep — pediatric infectious-disease research (pediatric HIV, pediatric TB, pediatric respiratory pathogen studies) where many pediatric samples need cold-chain biosafety processing.
Cold-chain small-volume clinical-research recruitment — recruiting-phase studies that draw 5 mL or 7 mL collection tubes at high per-day volume on the cold-chain biosafety chassis.
Veterinary clinical at scale — small-animal blood-component separation in 5/7 mL tube formats at institutional veterinary practice or veterinary-research lab throughput.
Hospital reference labs handling pediatric specimens — pediatric clinical chemistry and hematology prep at institutional throughput on the Z327-K platform.
Cross-format Z327-K core facilities — labs running pediatric tubes alongside other tube formats benefit from stocking the high-throughput A57 alongside the Z327-200 family.
Ordering & Configuration
4-bucket symmetric loading. All 4 buckets must use matching A57 inserts. Mixed-bucket configurations produce mass asymmetry.
Per-insert symmetric loading. Within each insert, the 8 tubes should be balanced symmetrically. Mixed 1.8/5/7 mL runs require pre-balance by total tube + sample mass.
Optional hermetic-seal engagement. When using the Z327-200-LID for biosafety workflows, confirm the lid is fully engaged on each bucket before each spin.
Tube cap confirmation. All Vacutainer rubber stoppers must be fully seated before spinning at 5,000 rpm.
Z327-200-A57 ships as 2 inserts. 1.8/5/7 mL Vacutainer-style tubes are operator-supplied (commodity clinical phlebotomy supplies). The Z327-200-BUK bucket and (optional) Z327-200-LID are sold separately.
Confirm at quote: bucket pairing (Z327-200-BUK in inventory; Z327-200-LID if biosafety required), chassis pairing (Z327 or Z327-K), tube format (1.8/5/7 mL Vacutainer-style), workflow drivers (cold-chain, biosafety, pediatric protocol), 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.
Z327-200 small-volume blood-tube insert family (Z327 / Z327-K chassis):
- Z327-200-A57 (this product) — 8 × 1.8–7 mL Vacutainer (32/cycle, highest pediatric throughput)
- Z327-200-A5F — 4 × 5 mL conical (16/cycle)
- Z327-200-A10 — 7 × 10/15 mL Vacutainer (28/cycle, larger tube format)
Pick the A57 for highest pediatric / small-volume Vacutainer throughput; pick A5F for 5 mL conical-format workflows; pick A10 for adult-standard 10 mL Vacutainer.
