5/7 mL Vacutainer Holders for Z287-0810H Rotor (2/pk)

The Z287-0810-A7 is a 5/7 mL Vacutainer tube holder for the Z287-0810H 8 × 10 mL blood collection swing-out rotor on the Hermle Z287-A — sold as a 2-pack. The Z287-0810H rotor is dimensioned for 10 mL Vacutainer-style blood collection tubes (16 mm OD, 100 mm length), and the A7 holder reduces the position envelope to accept smaller-diameter 1.8–7 mL Vacutainer tubes (13 mm OD, 75–100 mm length) for clinical workflows that include pediatric or small-volume blood-draw formats alongside the standard 10 mL primary collection.

Key Specifications

Compatibility & When to Order This SKU

Holder pairing — Z287-0810H 8 × 10 mL blood rotor only. The Z287-0810-A7 is engineered to fit the 10 mL Vacutainer position envelope on the Z287-0810H. Order this SKU when:

1. Adding pediatric / small-volume blood-tube workflow — when the lab's primary 10 mL Vacutainer workflow on the Z287-A also handles 5 mL or 7 mL Vacutainer formats (pediatric draws, small-volume sample studies, capillary-then-venous draws).
2. Full 8-position holder set — order 4 packs (8 holders) for symmetric full-rotor loading in 5/7 mL workflow.
3. Replacement holders if a current set is damaged or worn.

Pack Quantity & Symmetric Loading

The Z287-0810H rotor has 8 swing-out positions for 10 mL Vacutainer tubes. The A7 holder is sold 2/pk. For symmetric loading at 5,000 rpm, all 8 positions must use matching configurations — either all 8 positions with the A7 holder (5/7 mL workflow) or all 8 positions empty of holders (10 mL workflow). Mixed configurations produce mass asymmetry.

This means the practical purchase quantity is 4 packs (8 holders) for full-rotor symmetric loading in 5/7 mL workflow. A single 2-pack is appropriate only for paired symmetric loading of just 2 positions, with the remaining 6 positions either left empty or used with matching configurations on opposite-pair positions.

Application Profile

Pediatric clinical phlebotomy — pediatric blood draws typically use smaller-volume Vacutainer tubes (1.8–7 mL) to minimize patient blood loss. The A7 holder converts the Z287-0810H rotor for pediatric workflow without rotor swap.

Small-volume blood-sample studies — clinical-research protocols that use 5 mL or 7 mL Vacutainer-style tubes for the primary collection format (some assay protocols specify smaller draw volumes).

Mixed-volume clinical lab workflows — when the lab handles both adult (10 mL standard) and pediatric (5/7 mL) phlebotomy throughput, the A7 holder set extends the Z287-0810H rotor's format range.

Veterinary clinical workflows — small-animal blood-draw volumes typically fall in the 5 mL or smaller range; the A7 holder enables veterinary blood-component separation on the Z287-A + Z287-0810H combination.

Capillary-then-venous follow-up sampling — clinical-research draws that initially collect a smaller-volume Vacutainer (5 or 7 mL) and switch to a 10 mL collection on follow-up; the A7 holder set processes both formats on the same rotor.

Ordering & Configuration

Symmetric loading. All 8 rotor positions must use matching holder configurations.

Tube cap confirmation. All Vacutainer rubber stoppers must be fully seated before spinning at 5,000 rpm.

Holder seat verification. Confirm each A7 holder is fully seated in its rotor position before loading the tube.

Z287-0810-A7 ships as 2 holders. Tubes are operator-supplied (commodity 5 mL and 7 mL Vacutainer-style clinical phlebotomy supplies).

Confirm at quote: rotor pairing (Z287-0810H in inventory), chassis pairing (Z287-A), tube format (1.8–7 mL Vacutainer-style), pack count needed (4 packs for full-rotor symmetric loading in 5/7 mL workflow), and lead time.

Warranty: 5-Year Hermle warranty (3 years full + 2 years drivetrain) on the holders.

Z287-0810H blood-rotor format flexibility:

- Direct fit (no holder) — 6–10 mL Vacutainer (16 mm OD, 100 mm length) — the rotor's primary format

- Z287-0810-A7 (this product) — 1.8–7 mL Vacutainer (13 mm OD, 75–100 mm length) for pediatric and small-volume workflows

Order 4 packs (8 holders) for full 8-position symmetric loading in pediatric/small-volume workflow.