The Z306-100-A145 is the 145 mL Nalgene round-bottom bottle insert for the Hermle Z306-100 swing-out bucket on the Z307 chassis 4-place rotor — sold as a 2-pack. Each insert holds 1 × 145 mL bottle; the 4-bucket rotor configuration takes 2 packs (4 inserts) for full symmetric loading, delivering 4 × 145 mL bottles per cycle (580 mL total volume per cycle) when fully equipped. The largest bottle format in the Z306-100 insert family — the right pick for institutional bulk-prep workflows where 145 mL is the working volume.
Key Specifications
| SKU | Z306-100-A145 |
| Type | Bottle insert — 145 mL Nalgene round-bottom |
| Pack quantity | 2 inserts per SKU (full 4-bucket configuration takes 2 units = 4 inserts) |
| Per-insert capacity | 1 × 145 mL bottle |
| Per-cycle throughput (full configuration) | 4 × 145 mL bottles = 580 mL total per cycle |
| Bottle format | 145 mL Nalgene round-bottom (50 mm OD, 116 mm length) |
| Compatible bucket | Z306-100 (swing-out bucket on Z307 4-place rotor) |
| Compatible chassis | Z307 |
| Max. operating speed (with insert + bottle) | Per Z306-100 spec — 4,500 rpm at 3,350 × g maximum |
| Max. radius | 14.8 cm (0.6 cm radius correction with this insert) |
| List price | $325 (2-pack) |
Compatibility & When to Order This SKU
Insert pairing — Z306-100 swing-out bucket only. Order this SKU when:
- Adding 145 mL Nalgene bottle workflow to an existing Z307 + Z306-100 install — order 2 units for full 4-bucket symmetric loading (580 mL total throughput per cycle).
- Institutional bulk cell-prep workflows that batch 4 × 145 mL cultures or aliquots per cycle.
- Replacement inserts if a current set is damaged or worn.
Application Profile
4-bucket symmetric loading. All 4 buckets must hold matching A145 inserts for symmetric balance at 4,500 rpm. With full configuration, each cycle processes 580 mL of working volume — the largest single-cycle volume in the Z306-100 insert family.
Nalgene round-bottom format precision. The A145 envelope is dimensioned for the 50 mm OD × 116 mm length Nalgene round-bottom format. Bottles outside this dimensional range may not seat properly; verify dimensions if using non-Nalgene bottles.
Polypropylene Nalgene durability. Nalgene round-bottom bottles are autoclavable polypropylene — supports repeated reuse, chemical-cleaning cycles, and protocol stability over the bottle's service life.
Design Architecture
Institutional bulk cell-prep workflows — pelleting cells from 145 mL bacterial or mammalian culture batches; the 4 × 145 mL parallel throughput consolidates institutional prep in one cycle.
Vaccine and bioprocess intermediate prep — vaccine-development and bioprocess workflows that batch 145 mL volumes for intermediate concentration steps; the mid-RCF range (3,350 × g) supports gentle pellet recovery without over-compaction.
Mid-large volume protein workflows — TCA, ammonium-sulfate, organic precipitation in 145 mL working volume.
Environmental sample prep — water, soil-extract, sediment-supernatant prep at 145 mL bottle scale for downstream analytical workflows.
Mid-volume institutional clinical-research prep — pooled sample workflows where 4 patient pools batch into 145 mL bottles per cycle.
Cross-format Z307 chassis consolidation — labs running both 145 mL bulk-prep and smaller-volume workflows benefit from the cross-format Z306-100 insert family on a single bucket and chassis.
Ordering & Configuration
4-bucket symmetric loading. All 4 buckets must use matching A145 inserts. Mixed-bucket configurations produce mass asymmetry.
Bottle cap confirmation. All Nalgene bottles must be securely capped before spinning at 4,500 rpm — at 145 mL working volume, sample loss from a cap failure represents substantial sample volume.
Bottle volume balance. When the 4 bottles carry different sample volumes, pre-balance pairs by total mass before spinning. At 145 mL bottle scale, 1–2 mL volume differences per bottle don't materially affect balance, but >5 mL differences do.
Z306-100-A145 ships as 2 inserts. Bottles (145 mL Nalgene round-bottom) are operator-supplied.
Confirm at quote: bucket pairing (Z306-100 in inventory), chassis pairing (Z307), bottle format (145 mL Nalgene round-bottom, 50 mm OD), 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 bottle-insert family (Z307 chassis):
- Z306-100-A145 (this product) — 145 mL Nalgene round-bottom — largest bottle insert in the family
- Z306-100-A100 — 100 mL round-bottom glass
- Z306-100-A85 — 85 mL bottle
- Z306-100-A50 / A50R — 50 mL conical / round
Pick the A145 when the workflow batches 4 × 145 mL bulk preps per cycle; pick smaller-volume inserts when working volume is below 100 mL per position.
