maxiLiLi-LC00200

Significance of the topic

The maxiLiLi is a preparative centrifugal chromatography instrument engineered for pilot-scale purification and small production batches. It fills the gap between benchtop (mini/midi) devices and full-scale preparative units by enabling kilogram-scale separations with rapid setup and mobility. Such capability is important for process development, pilot production, and scalable method transfer in pharmaceutical, fine chemicals and natural product sectors.

Objectives and study overview

This technical datasheet communicates the design features, operating envelope, scale-up relationships and typical performance characteristics of the maxiLiLi-LC00200 unit. The document aims to allow users to assess suitability for pilot production, estimate throughput and solvent consumption, and plan scale-up from smaller LiLi platforms using simple mathematical relationships.

Methodology and operating principles

The maxiLiLi is a centrifugal partition chromatography-style instrument employing a z-cell rotor geometry to retain stationary phase and improve plate number relative to smaller LiLi devices. Separation is achieved by radial distribution of phases in a rotating chamber while mobile phase is pumped through. The unit is designed for straightforward scaling of flow, rotation and load from established methods on mini/midi LiLi units using conservation-based scaling laws.

Scaling relationships

Key scale-up formulae provided by the manufacturer (presented conceptually) include:

• Flow scaling: Q_maxi = Q_mini * (V_maxi / V_mini) — flow scales with column volume.
• Mass (load) scaling: m_maxi = m_mini * (V_maxi / V_mini) — sample mass scales with column volume.
• Rotational speed scaling: n_maxi = n_mini * sqrt(r_mini / r_maxi) — rpm adjusted by rotor radius ratio.

These relationships allow translation of methods developed on smaller LiLi units to the maxiLiLi platform with minimal reoptimization.

Used instrumentation

The maxiLiLi-LC00200 specification highlights the integrated hardware and materials of construction relevant for laboratory and pilot use:

• Integrated accessories: injector, eluent transfer pumps, detector and fraction change valve included for production-ready operation.
• Rotor and cell: z-cell rotor design, rotor radius 390 mm, stationary phase retention >80%.
• Flow and volume: column (rotor) volume 3.3–3.6 L; recommended flow range 50–300 mL/min.
• Loading: typical injected sample mass 100–150 g per run.
• Rotational speed: 0–600 rpm range; recommended working range 150–450 rpm.
• Pressure limits: typical operating pressure 0.2–1.0 MPa (29–145 psi); maximum allowable pressure 2.5 MPa (725 psi).
• Materials of construction: stainless steel 1.4404 (AISI 316L / X2CrNiMo17-12-2), PTFE, PEEK, FFKM for wetted components.
• Fluid connections: inlet/outlet pipe ID ≈2.0–2.2 mm (0.079"–0.087") with OD 1/8" (3.2 mm); standard connectors 5/16"-24; inlet/outlet pipes in stainless steel 1.4404.
• Electrical: regional versions for 220 V / 50 Hz and 110 V / 60 Hz; current ratings 10 A (Europe) and 15 A (USA).

Main results and discussion

From the technical parameters, maxiLiLi targets pilot-scale separations with the following practical implications:

• Throughput: column volume and recommended flows allow kilogram-scale batches when combined with the stated loading (100–150 g) and repeated runs.
• Separation quality: z-cell rotor design and high stationary phase retention (>80%) support improved theoretical plate count and better resolution than smaller LiLi models.
• Operational flexibility: broad rpm and flow ranges permit optimization between resolution and throughput; solvency compatibility covers common organic solvents, water and acids/bases up to ~5% (with post-run water flush recommended).
• Robustness: stainless-steel wetted components and compatibility with typical process chemistries (sulfuric, hydrochloric acids, alkali hydroxides) make the unit suitable for diverse chemistries, while organometallic reagents are not recommended.
• Portability and deployment: the mobile design supports rapid setup in pilot labs or small production lines, enabling capacity build-up as needs grow.

Benefits and practical applications

The maxiLiLi unit offers several practical advantages for process development and small-scale manufacturing:

• Fast method transfer and scale-up from mini/midi LiLi devices using simple, physically grounded scaling laws.
• Integrated system components reduce additional equipment needs for pilot runs.
• Good chemical compatibility and stainless-steel construction support a wide range of synthesis and purification workflows.
• Mobility and compact footprint (790 × 1100 × 1200 mm; 290 kg) facilitate deployment in multi-use facilities.

Future trends and applications

Potential directions to amplify the value of maxiLiLi-type systems include:

• Automation and process analytical technology (PAT) integration for closed-loop control and real-time endpoint detection.
• Adoption of greener solvents and solvent-recycling modules to reduce environmental footprint and operating cost.
• Hybrid workflows combining centrifugal chromatography with orthogonal purification steps (e.g., chromatography/filtration coupling) for complex mixtures.
• Continuous or semi-continuous operation modes for increased throughput and smoother scale bridging to manufacturing.
• Advanced rotor and cell geometries to further enhance plate count and stationary phase retention.

Conclusion

The maxiLiLi-LC00200 is positioned as a versatile, pilot-scale centrifugal chromatography platform that balances resolution, throughput and operational convenience. Its z-cell rotor, substantial column volume and practical flow/pressure envelope make it suitable for kilogram-scale purification tasks where mini/midi devices are no longer adequate. Straightforward scaling rules and integrated accessories simplify method transfer and deployment in pilot production environments.