Apparatus And Components Thereof For Liquid Chromatography
AssigneeWaters Technologies Corporation
InventorsJohn Buchanan, Edward J. Ognibene, Peter Kirby
Life of this patent
Estimating the term…
Abstract
The invention provides chromatographic apparatus and components manufactured from a corrosion resistant alloy typically comprising iron, nickel, chromium and molybdenum. The apparatus and components exhibit superior biocompatibility and corrosion resistance, especially to mobile phases containing chlorides. They are especially useful in HPLC and HPLC, and are particularly useful in conjunction with chromatographic separation media comprising particles smaller than 2 μm diameter.
Claims20
A component of a chromatographic apparatus for carrying out a analytical chromatographic separation by the passage through a stationary phase of a mobile phase into which a sample has been introduced, said component comprising at least one surface that in use may contact a said mobile phase, wherein said at least one surface is formed of an alloy comprising between about 40 and 60% of iron, between about 20 and 26% of nickel, and between about 20 and 22% of chromium.
Chromatographic apparatus for carrying out an analytical chromatographic separation using a mobile phase, said apparatus comprising at least one component having a surface which in use may contact said mobile phase, wherein said surface is formed in an alloy comprising between about 40 and 60% of iron, between about 20 and 26% of nickel, and between about 20 and 22% of chromium.
Dependencies are inferred from the claim text.