GB921882A - Microsyringe for gas-chromatography - Google Patents

Microsyringe for gas-chromatography

Info

Publication number
GB921882A
GB921882A GB4210760A GB4210760A GB921882A GB 921882 A GB921882 A GB 921882A GB 4210760 A GB4210760 A GB 4210760A GB 4210760 A GB4210760 A GB 4210760A GB 921882 A GB921882 A GB 921882A
Authority
GB
United Kingdom
Prior art keywords
pipe
cap
rod
moved back
lateral hole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4210760A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Laboratori Riuniti Studi E Ricerche SpA
Original Assignee
Laboratori Riuniti Studi E Ricerche SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Laboratori Riuniti Studi E Ricerche SpA filed Critical Laboratori Riuniti Studi E Ricerche SpA
Publication of GB921882A publication Critical patent/GB921882A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G01N30/04—Preparation or injection of sample to be analysed
    • G01N30/16—Injection
    • G01N30/18—Injection using a septum or microsyringe

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

921,882. Delivering measured quantities of liquid; sampling liquids. LABORATORI RIUNITI STUDI E. RICERCHE S.p.A. Dec. 7, 1960 [Dec. 16, 1959], No. 42107/60. Class 106(5). An apparatus for taking samples and supplying them to a gas chromatography column comprises a hypodermic pipe D pointed at both ends and having lateral holes near the ends and the holes are sealable by an elastic cap a on a slidable member A and by an elastic cap M on a hollow piston rod C which is slidable in a cylinder G. The pipe D is fixed in a removable member E. In use, the member A is moved forward until the cap a seals the lateral hole in the outer end of the pipe in position 4 and the piston rod is pushed in to compress the air in the chamber B and so that the inner end of the pipe moves through the cap M into the hollow rod C. The rod is then filled with the liquid to be sampled and the member A is moved back to original position so that the lateral hole at the outer end of the pipe is unsealed. A few drops are allowed to flow out so that the filling of the pipe is ensured and then the member A is moved back to position 4 to re-seal the outer lateral hole. On insertion of the pipe into the rubber capsule of the chromatography column the member A is moved back and after the pipe has penetrated the capsule, the rod C is moved back so that the cap M, in position 3, unseals the lateral hole in the inner end of the pipe and its contents are expelled by the compressed air. The contents may alternatively be expelled by a gas introduced through a valve. If the liquid has a low boiling point, the pipe is filled from a bottle held upside down, the cap a being in initial position and the cap M in position 1. Once the needle has penetrated the sealing capsule of the bottle and has filled, the rod C is retracted until the cap M is in position 2 and member A is moved to position 4, so that both ends of the pipe are sealed. Pins in bayonet slots fix the positions of the rod C and member A.
GB4210760A 1959-12-16 1960-12-07 Microsyringe for gas-chromatography Expired GB921882A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2097259 1959-12-16

Publications (1)

Publication Number Publication Date
GB921882A true GB921882A (en) 1963-03-27

Family

ID=11174808

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4210760A Expired GB921882A (en) 1959-12-16 1960-12-07 Microsyringe for gas-chromatography

Country Status (1)

Country Link
GB (1) GB921882A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102645239A (en) * 2012-05-02 2012-08-22 中冶焦耐(大连)工程技术有限公司 Measuring hole for measuring gas parameters
CN112858545A (en) * 2021-02-28 2021-05-28 王刚 Chromatograph capable of adjusting carrier gas flow rate and using method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102645239A (en) * 2012-05-02 2012-08-22 中冶焦耐(大连)工程技术有限公司 Measuring hole for measuring gas parameters
CN112858545A (en) * 2021-02-28 2021-05-28 王刚 Chromatograph capable of adjusting carrier gas flow rate and using method thereof
CN112858545B (en) * 2021-02-28 2022-11-25 河南康威药业有限公司 Chromatograph capable of adjusting carrier gas flow rate and using method thereof

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