Preliminary measurement of gas concentrations of perfluropropane using an analytical weighing balance
Abstract We describe the use of an analytical weighing balance of measurement accuracy 0.00001 g for determination of concentrations of perfluropropane (C3 F8 ) gas used in ophthalmic surgical vitrectomy procedures. A range of test eyes corresponding to an eye volume of 6.1 ml were constructed using...
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| Veröffentlicht in: | Medical engineering & physics 2014-02, Vol.36 (2), p.250-254 |
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| creator | Clarkson, Douglas McG Manna, Avinish Hero, Mark |
| description | Abstract We describe the use of an analytical weighing balance of measurement accuracy 0.00001 g for determination of concentrations of perfluropropane (C3 F8 ) gas used in ophthalmic surgical vitrectomy procedures. A range of test eyes corresponding to an eye volume of 6.1 ml were constructed using 27 gauge needle exit ducts and separately 20 gauge (straight) and 23 gauge (angled) entrance ports. This method allowed determination of concentration levels in the sample preparation syringe and also levels in test eyes. It was determined that a key factor influencing gas concentrations accuracy related to the method of gas fill and the value of dead space of the gas preparation/delivery system and with a significant contribution arising from the use of the particle filter. The weighing balance technique was identified as an appropriate technique for estimation of gas concentrations. |
| doi_str_mv | 10.1016/j.medengphy.2013.08.001 |
| format | Article |
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A range of test eyes corresponding to an eye volume of 6.1 ml were constructed using 27 gauge needle exit ducts and separately 20 gauge (straight) and 23 gauge (angled) entrance ports. This method allowed determination of concentration levels in the sample preparation syringe and also levels in test eyes. It was determined that a key factor influencing gas concentrations accuracy related to the method of gas fill and the value of dead space of the gas preparation/delivery system and with a significant contribution arising from the use of the particle filter. The weighing balance technique was identified as an appropriate technique for estimation of gas concentrations.</description><identifier>ISSN: 1350-4533</identifier><identifier>EISSN: 1873-4030</identifier><identifier>DOI: 10.1016/j.medengphy.2013.08.001</identifier><identifier>PMID: 23999382</identifier><language>eng</language><publisher>England: Elsevier Ltd</publisher><subject>Balancing ; Chemistry Techniques, Analytical - instrumentation ; Chemistry Techniques, Analytical - methods ; Entrances ; Eyes ; Fluorocarbons - analysis ; Fluorocarbons - chemistry ; Gages ; Gases - analysis ; Gauges ; Macular hole ; Mathematical analysis ; Perfluropropane ; Radiology ; Retinal detachment ; Syringes ; Tamponade ; Vitrectomy ; Vitrectomy - instrumentation ; Weighing</subject><ispartof>Medical engineering & physics, 2014-02, Vol.36 (2), p.250-254</ispartof><rights>IPEM</rights><rights>2013 IPEM</rights><rights>Copyright © 2013 IPEM. Published by Elsevier Ltd. 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A range of test eyes corresponding to an eye volume of 6.1 ml were constructed using 27 gauge needle exit ducts and separately 20 gauge (straight) and 23 gauge (angled) entrance ports. This method allowed determination of concentration levels in the sample preparation syringe and also levels in test eyes. It was determined that a key factor influencing gas concentrations accuracy related to the method of gas fill and the value of dead space of the gas preparation/delivery system and with a significant contribution arising from the use of the particle filter. The weighing balance technique was identified as an appropriate technique for estimation of gas concentrations.</description><subject>Balancing</subject><subject>Chemistry Techniques, Analytical - instrumentation</subject><subject>Chemistry Techniques, Analytical - methods</subject><subject>Entrances</subject><subject>Eyes</subject><subject>Fluorocarbons - analysis</subject><subject>Fluorocarbons - chemistry</subject><subject>Gages</subject><subject>Gases - analysis</subject><subject>Gauges</subject><subject>Macular hole</subject><subject>Mathematical analysis</subject><subject>Perfluropropane</subject><subject>Radiology</subject><subject>Retinal detachment</subject><subject>Syringes</subject><subject>Tamponade</subject><subject>Vitrectomy</subject><subject>Vitrectomy - instrumentation</subject><subject>Weighing</subject><issn>1350-4533</issn><issn>1873-4030</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkktv1DAQxy0Eog_4CpAjl4TxI35ckKoKKFIlkOjdcpzJ1kviLHYC2m-Poy09cCnSSLZH_3l4fkPIWwoNBSrf75sJe4y7w_2xYUB5A7oBoM_IOdWK1wI4PC933kItWs7PyEXOewAQQvKX5IxxYwzX7Jzgt4RjmEJ06VhN6PKacMK4VPNQ7Vyu_Bx9eSa3hDnmzXvANIxrmg_FXMRqzSHuKheLufG4BO_G6jeG3f3m7tzoSoJX5MXgxoyvH85Lcvfp4931TX379fOX66vb2gvDllq61ijZDVQyRKE1UOSi7TrEQcjOK1QGfOcNUDNoDgb7XsjeMSkFOND8krw7pS29_VwxL3YK2eNYesB5zZYqw5mWsmVPS1sqleRS0qelwhjKpaKbVJ2kPs05JxzsIYWpjNZSsBs4u7eP4OwGzoK2BVyJfPNQZO2K4jHuL6kiuDoJsMzvV8Bksw9YZtuHhH6x_Rz-o8iHf3L4McSN2A88Yt7PayoMy49sZhbs921_tvWhvEQravgfiAvEBg</recordid><startdate>20140201</startdate><enddate>20140201</enddate><creator>Clarkson, Douglas McG</creator><creator>Manna, Avinish</creator><creator>Hero, Mark</creator><general>Elsevier Ltd</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7QO</scope><scope>8FD</scope><scope>FR3</scope><scope>P64</scope><scope>7TB</scope><scope>7U5</scope><scope>L7M</scope></search><sort><creationdate>20140201</creationdate><title>Preliminary measurement of gas concentrations of perfluropropane using an analytical weighing balance</title><author>Clarkson, Douglas McG ; 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| ispartof | Medical engineering & physics, 2014-02, Vol.36 (2), p.250-254 |
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| source | MEDLINE; Elsevier ScienceDirect Journals Complete |
| subjects | Balancing Chemistry Techniques, Analytical - instrumentation Chemistry Techniques, Analytical - methods Entrances Eyes Fluorocarbons - analysis Fluorocarbons - chemistry Gages Gases - analysis Gauges Macular hole Mathematical analysis Perfluropropane Radiology Retinal detachment Syringes Tamponade Vitrectomy Vitrectomy - instrumentation Weighing |
| title | Preliminary measurement of gas concentrations of perfluropropane using an analytical weighing balance |
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