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AssigneeTrajan Scientific Australia Pty Ltd
InventorsKyle John James Bachus, Herbert Tze Cheung Foo, Heike Ebendorff-Heidepriem, Yvonne Marie Stokes, Josef Adam Giddings
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A method of forming a capillary tube for electrospray ionization (ESI) having at least one tip with a desired tip profile. The method includes providing a pre-finished capillary tube of substantially homogenous material. The capillary tube has a first end and an internal bore. The first end of the pre-finished capillary tube is wet-etched in an etchant for an etch duration. A protective fluid flows through the internal bore of the capillary tube at a flow rate during the etch duration and the flow rate and the etch duration are determined to obtain the desired tip profile below a liquid level of the etchant.
A method of forming a capillary tube for electrospray ionization (ESI) having at least one tip with a desired tip profile, the method comprising:
A method of forming a capillary tube for ESI, the capillary tube having at least one tip, the method comprising:
A capillary tube for ESI, the capillary tube having a longitudinal axis, a first end and a tip at the first end approximating a cone which is defined by a peripheral wall having varying angles of inclination relative to the longitudinal axis which angles generally progress from higher to lower angles towards the opening of the internal bore.
Dependencies are inferred from the claim text.