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Reproducible Injections |
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The syringe only concept of the PAL series of LC
sample loaders combines the manual sample injection procedure with
the precision and throughput of a robotic liquid handling system.
Samples are aspirated with a conventional liquid syringe and are
transferred directly into the sample loop. No error prone teflon
tubing or transfer lines are involved during the sample loading
process. |
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Automatic Syringe Wash |
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Before and after each injection the syringe and
syringe needle (needle inside and outside) are rinsed in a
dedicated Fast Wash Station containing two different cleaning
solvents. This unique design virtually eliminates sample carryover
and adsorption problems at the syringe. |
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Probe Cleaning Protocols |
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Schedule one or more rinses in between samples to reduce carryover
to undetectable levels. Tough CapNMR transfer lines of
either fused silica or Teflon FEP allow choice of organic solvents
or oxiders (e.g., peroxide) to be used for optimal cleaning.
Turn on 'Active Baseline Monitoring' to ensure the probe is
squeaky clean before injecting the next sample. |
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Recoverable Error Reporting |
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Errors reported on web page and by email. Errors are
recoverable and your sample is never lost. |
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Filter Backwash to Extend Life
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In-line filters prevent particulates greater than 2 microns in
size, from entering capillary valves and plumbing. Although
filters are easily replaced, automated backwashing after each
sample can greatly increase the lifetime of these defensive
components.. Protasis customers using the 'reverse rinse'
routinely process hundreds of samples in a row without filter
changes. |
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Backpressure Monitoring |
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An integral pressure transducer monitors backpressure on the
transfer line and flowcell. In the rare event of a system
blockage, the controller will sense a pressure increase and shut
the system down immediately. |
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Automatic System Flush |
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Scheduled flushes remove analyte from the flowcell and transfer
line at the end of each worksession to prevent any potential
problems from precipitation or crystallization in the tubing. |
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