Dual Channel Sample Cleanup


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General Description of process:

Samples are injected and pass through a guard column which is in-line with the analytical column. At a specified time, the guard column switches out of line and is regenerated using a wash pump configured to do a step gradient while the sample peaks are acquired.

To increase throughput, samples are injected ahead [1]of the acquisition time [2], so that pre-filtration is occurring concurrently with the previous samples acquisition. Each line of the sample list processes a pair of samples which are staggered in this way.

4 pumps are required: - 2 wash pumps (Agilent 1200) pre-programmed to perform the step gradient and 2 isocratic analytical pumps running continuously one for each column.

Project Ref: H1073b

For other cost/time saving measures consider:

  • LEAP offers multiple choices of Valve Self Wash Stations to aid in cleaning the valve [3]
  • “Look Ahead”, sample prep before injection (M-004) using LEAP Shell Software [4]
  • Dual Channel Parallel Injection (M-005) using LEAP Shell software [5]
  • Summary of LC Multi Valve Applications [6]
  • LEAP Shell Software and application for custom injections and scheduling [7]

 ↳ leaptec.com  ↳ leapwiki.com

LEAP strives to find total solutions for analytical lab automation by automating analytical processes for small and large molecules in extracted liquids, solids, and recently in human, animal and plant tissues. We provide the precise robotics and efficient sample prep required by modern measurement techniques such as MALDITOF mass spectroscopy. Our newest specialty customization of CTC Analytics’ PAL features small workstations that can perform complex liquid handling tasks including HPLC-Purification, SPE, filtration, weighing, heating and stirring. They can be configured as stand alone units or integrated for “just in time” sample prep for LC-MS or GC-MS analysis.
LEAP provides automated workstation instrumentation solutions based on the LEAP CTC PAL X, Y, Z syringe only autosampler robot from LEAP Technologies. This extremely flexible, precise, and adaptable liquid handling robotic platform is available in a variety of lengths and options depending on the requirements of your sample preparation and injections for your UHPLC, LC or GC chromatography.LEAP offers full support and service for the PAL platform in addition to being able to write custom macros, cycles, and scheduling to your applications. Please contact LEAP Technologies on how we can help you get maximized throughput with flexible pipetting automation solutions.

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For additional information about LEAP and the PAL Platform, please contact LEAP Technologies.

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