The Z306-100-A100 is the 100 mL round-bottom glass 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 × 100 mL bottle; the 4-bucket rotor configuration takes 2 packs (4 inserts) for full symmetric loading, delivering 4 × 100 mL bottles per cycle when fully equipped. The 100 mL format sits in the mid-volume bottle workflow range — between 50 mL conical (small-volume cell-prep) and 145 mL+ bottles (institutional bulk prep).
Key Specifications
| SKU | Z306-100-A100 |
| Type | Bottle insert — 100 mL round-bottom glass |
| Pack quantity | 2 inserts per SKU (full 4-bucket configuration takes 2 units = 4 inserts) |
| Per-insert capacity | 1 × 100 mL bottle |
| Per-cycle throughput (full configuration) | 4 × 100 mL bottles per cycle |
| Bottle format | 100 mL round-bottom glass (44 mm OD, 95–105 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 (1.1 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. This insert is engineered to seat into the Z306-100 bucket envelope. Order this SKU when:
- Adding 100 mL round-bottom bottle workflow to an existing Z307 + Z306-100 install — order 2 units for full 4-bucket symmetric loading (4 bottles/cycle).
- Mid-volume cell-prep workflows that use 100 mL round-bottom glass for organic-solvent compatibility or for protocol steps that specify the 100 mL bottle format.
- Replacement inserts if a current set is damaged or worn.
Application Profile
4-bucket symmetric loading. The Z307 4-place swing-out rotor takes 4 buckets; for symmetric balance at 4,500 rpm, all 4 buckets must use matching inserts. With the A100 insert, all 4 positions hold 1 × 100 mL bottle for a 4-bottle-per-cycle configuration.
Round-bottom glass — chemical and protocol compatibility. The 100 mL round-bottom glass format supports workflows that require glass (organic-solvent compatibility, strong-acid/base reactions, autoclave reuse) or where the protocol specifies round-bottom geometry over conical.
Bottle format precision. The A100 envelope is dimensioned for the 44 mm OD × 95–105 mm length range. Bottles outside this dimensional range may not seat properly; verify dimensions if using non-standard bottle suppliers.
Design Architecture
Mid-volume cell harvest workflows — pelleting cells from 100 mL suspension culture batches; the round-bottom glass bottle supports protocols requiring glass (vs polypropylene) for chemical compatibility.
Organic extraction at 100 mL working volume — phase-separation of aqueous and organic phases in 100 mL glass bottles where polypropylene would not tolerate the solvent.
Bulk-reagent precipitation workflows — protein precipitation, salt-out, or organic-precipitation steps in mid-volume format.
Mid-volume institutional clinical-research prep — when the workflow batches 4 patient samples in 100 mL working volume per cycle.
Educational research labs — graduate-level biochemistry and microbiology where 100 mL glass round-bottom is the protocol-specified format.
Ordering & Configuration
4-bucket symmetric loading. All 4 buckets must use matching A100 inserts. Mixed-bucket configurations produce mass asymmetry.
Bottle cap confirmation. All bottles must be capped before spinning at 4,500 rpm.
Bottle volume balance. When the 4 bottles carry different sample volumes, pre-balance pairs (positions 1+3, 2+4) by total mass before spinning.
Z306-100-A100 ships as 2 inserts. Bottles (100 mL round-bottom glass) are operator-supplied.
Confirm at quote: bucket pairing (Z306-100 in inventory), chassis pairing (Z307), bottle format (100 mL round-bottom glass, 44 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-A100 (this product) — 100 mL round-bottom glass
- Z306-100-A85 — 85 mL bottle (smaller mid-volume bottle format)
- Z306-100-A145 — 145 mL Nalgene round-bottom (larger bottle format)
- Z306-100-A50 — 50 mL conical (smaller-volume cell-prep)
- Z306-100-A50R — 50 mL round
Match the insert to the workflow's bottle format; the Z306-100 bucket on the Z307 chassis is engineered for cross-format bottle workflow flexibility from 50 mL through 145 mL.
