【讨论】你对纳升色谱有多少了解

進樣量和試劑量都隻要很少就能進行檢測的LC吧

说实在这个了解的不多

不过从网上了解一些信息:

Chorus 220 solvent delivery system
Capillary and Nano $$lc
Preparation/Collection of MALDI Targets
Multidimensional Chromatography
Front-end separation for MS proteomics

Isocratic or gradient high pressure pumping system for precise, pulse-free nanoliter fluid delivery
High performance pressure monitored zirconium pistons Direct solvent delivery without flow splitting
Micro version gradient flow range 1ul-70ul,Nano version gradient flow rate 200nl-10ul
Independent solvent channel outlets for low dead volume and rapid gradient equilibrium
Ultra compact design saves valuable benchspace Complete $$lc-MS Front-End together with any CTC PAL sampler loader
Easy to use graphical software package controls gradient formation and monitors flow rate, pressure and system status



Unique Design

The Chorus 220 solvent delivery system achieves precise, pulseless fluid delivery at flow rates as low as 200nl/min. required in today's nanoscale and capillary $$lc. It's unique design incorporating two high pressure syringe pumps connected to a proprietary piston switching valve* delivers accurate gradients that are ideally suited for high sensitivity UV, Fluoresence or electrospray mass spectrometry using capillary column. Both motor-driven and software controlled syringe pumps maintain constant, pulse-free solvent delivery. High pressure mixing and short tubing paths reduces gradient delay and achieves low overall volume.

Splitless Nano Gradient Delivery

The Chorus 220 system provides true nanoliter solvent delivery without flow splitting often used in conventional low flow $$lc pumps. This approach avoids unintentional changes in flow rate due to split ratio fluctuations caused by e.g. increased column resistance or viscosity changes during gradient formation. Furthermore splitless operation results in a real reduction of solvent consumption without recycling costs.

Software control

The Chorus 220 system is operated by a dedicated Windows XP solvent delivery software. Intuitive graphical method editing, flow rate and pressure diagnostics, time programmable valve switching features makes it easy to setup, run and monitor the whole chromatographic process. In manual mode important parameters can easily be varied during system start-up or method development. Third party devices like detectors, autosamplers or column switching valves are straightforward combined by various digital outputs.

Complete CTC Analytics $$lc-MS Front-End

Despite of it's high performance the Chorus 220 measures just 225mm in width. This compact size makes it an ideal companion of any $$lc-MS system. All Chorus systems can easy be placed underneath of one of CTC's PAL sample loaders. The short tubing distance between sample injection valve and Chorus pump results in an optimized ultra low delay volume.

Pre-column SPE -Separation -MALDI Spotting including Matrix addition using a HTC PAL, PAL MALDI Option and 2 Chorus 220 Nanoflow Pumps