Fluent material handling – with receiver or receiver coacting mea – Processes – Gas or variation of gaseous condition in receiver
Patent
1984-11-19
1986-07-01
Bell, Jr., Houston S.
Fluent material handling, with receiver or receiver coacting mea
Processes
Gas or variation of gaseous condition in receiver
141 31, 141 67, 141258, 73 231, 73 611C, 277 3, 277DIG1, 285 95, 285 96, B65B 304
Patent
active
045974217
ABSTRACT:
A liquid sample in a syringe can be injected into a capillary column with inner diameter less than 200 microns without inserting the injection needle of the syringe into the column. The end of a modified injection needle according to this invention has a tubular opening with inner diameter sufficiently large so that the intake end of the column can be inserted inside, thereby establishing an annular duct between the needle and the column. A carrier gas is caused to flow through this duct while the plunger on the syringe is pressed to squeeze the liquid into the needle, thus forcing the liquid into the capillary column.
REFERENCES:
patent: 4278360 (1981-07-01), Lorscheid et al.
Bell, Jr. Houston S.
Cole Stanley Z.
Nishimura Keiichi
Schnapf David
Varian Associates Inc.
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