7 × 5/7 mL Tube Insert for Z306-100 (2/pk)

The Z306-100-A57 is the 7-position 5/7 mL tube insert for the Hermle Z306-100 swing-out bucket on the Z307 chassis 4-place rotor — sold as a 2-pack. Each insert holds 7 × 5/7 mL tubes; the 4-bucket rotor configuration takes 2 packs (4 inserts) for full symmetric loading, delivering 28 × 5/7 mL tubes per cycle in swing-out geometry. Sized for clinical phlebotomy and clinical-research workflows that use 5 mL or 7 mL Vacutainer-style blood collection tubes — the swing-out flat-sediment geometry is the preferred configuration for clinical blood-component separation.

Key Specifications

Compatibility & When to Order This SKU

Insert pairing — Z306-100 swing-out bucket only. Order this SKU when:

1. Adding 5 mL or 7 mL clinical blood-tube workflow to an existing Z307 + Z306-100 install — order 2 units for full 4-bucket symmetric loading (28 tubes/cycle).
2. Pediatric or small-volume blood-collection workflow when 5 mL or 7 mL Vacutainer-style tubes are the primary collection format.
3. Mid-throughput clinical workflows — 28 × 5/7 mL parallel throughput sized for institutional clinical blood-component separation per cycle.
4. Replacement inserts if a current set is damaged or worn.

Application Profile

Swing-out clinical blood-tube workflow. The Z306-100 + A57 combination delivers swing-out clinical-blood-tube spinning — flat sediment, clean serum/plasma–cell-pellet phase boundary, easy supernatant aspiration. The preferred geometry for clinical chemistry, hematology prep, and immunoassay sample prep that starts from primary collection tubes.

5/7 mL format flexibility. The insert envelope accepts both 5 mL and 7 mL Vacutainer-style tube formats (typical 13 mm OD); the same insert serves either tube size, with mixed-volume runs accommodated by symmetric loading by mass.

4-bucket symmetric loading. All 4 buckets must use matching A57 inserts for symmetric balance.

Design Architecture

Pediatric clinical phlebotomy — pediatric blood draws use smaller-volume Vacutainer tubes (5 mL or 7 mL) to minimize patient blood loss. The A57 + Z306-100 + Z307 combination handles 28 pediatric samples per cycle.

Small-volume adult phlebotomy — clinical-research protocols and reduced-volume clinical workflows that specify 5 mL or 7 mL collection tubes.

Veterinary clinical workflows — small-animal blood draws typically fall in the 5 mL or smaller range; the A57 insert enables veterinary blood-component separation at 28 samples per cycle.

Clinical-research recruitment workflows — recruiting-phase studies that draw 5 mL or 7 mL tubes at moderate per-day volume.

Mixed-volume clinical lab consolidation — when the lab handles both 5/7 mL and other tube formats on the same Z307 + Z306-100 inventory, the A57 insert serves the small-volume workflow alongside other format inserts.

Educational lab teaching workflows — undergraduate clinical-tech curricula using 5 mL or 7 mL teaching tubes at standard 28-tube section sizes.

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 7 tubes should be balanced symmetrically. Mixed 5 mL / 7 mL runs require pre-balance by total tube + sample mass.

Tube cap confirmation. All Vacutainer rubber stoppers or screw caps must be fully seated before spinning at 4,500 rpm.

Z306-100-A57 ships as 2 inserts. 5 mL and 7 mL Vacutainer-style tubes are operator-supplied (commodity clinical phlebotomy supplies).

Confirm at quote: bucket pairing (Z306-100 in inventory), chassis pairing (Z307), tube format (5 mL or 7 mL Vacutainer-style), 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.

Z306-100 bucket clinical-blood-tube insert family (Z307 chassis):

- Z306-100-A57 (this product) — 7 × 5/7 mL clinical blood tubes

- Z306-100-A10 — 7 × 10/15 mL round-bottom for larger blood-tube formats

- Z306-100-A15 — 2 × 15 mL conical

Match the insert to the workflow's clinical blood-tube format; the Z306-100 + Z307 combination delivers swing-out clinical-blood-tube workflows across the standard pediatric-through-adult tube size range.