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Supercritical fluid chromatography

  • US 4,962,662 A
  • Filed: 07/10/1989
  • Issued: 10/16/1990
  • Est. Priority Date: 02/17/1988
  • Status: Expired due to Fees
First Claim
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1. An apparatus for controlling the mass flow of a mobile phase in a chromatographic analysis system, said apparatus comprising:

  • a restrictor, through which the mobile phase passes, and heater means, which transfers heat to said restrictor, for heating said mobile phase in said restrictor so that for a given mobile phase pressure the mass flow of said mobile phase is maintained at a preselected level by modifying the temperature of said mobile phase in said restrictor.

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