Improved magnetic suspension densimeter for biochemical reactions
An improved version of our magnetic suspension densimeter has been developed for use with samples of aqueous systems as small as 100 μl. The instrument’s sensitivity to a change in density of the solution under test (measured as a voltage shift) is 0.1 mV≊4.5×10− 6 g ml− 1, with a base‐line drift le...
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| Veröffentlicht in: | Review of scientific instruments 1988-02, Vol.59 (2), p.307-313 |
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| container_title | Review of scientific instruments |
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| creator | Gillies, G. T. Kupke, D. W. |
| description | An improved version of our magnetic suspension densimeter has been developed for use with samples of aqueous systems as small as 100 μl. The instrument’s sensitivity to a change in density of the solution under test (measured as a voltage shift) is 0.1 mV≊4.5×10−
6 g ml−
1, with a base‐line drift less than 9 μV/h. The nonlinearity of the densimeter’s response is less than 5 ppm over its calibration range. In this paper, we describe the new magnetic suspension circuit, discuss the precision limits of the instrument, and present the results of measurements made on a tetracarboxylate sequestering agent known as BAPTA which we use as a calcium‐ion indicator. |
| doi_str_mv | 10.1063/1.1140246 |
| format | Article |
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6 g ml−
1, with a base‐line drift less than 9 μV/h. The nonlinearity of the densimeter’s response is less than 5 ppm over its calibration range. In this paper, we describe the new magnetic suspension circuit, discuss the precision limits of the instrument, and present the results of measurements made on a tetracarboxylate sequestering agent known as BAPTA which we use as a calcium‐ion indicator.</description><identifier>ISSN: 0034-6748</identifier><identifier>EISSN: 1089-7623</identifier><identifier>DOI: 10.1063/1.1140246</identifier><identifier>CODEN: RSINAK</identifier><language>eng</language><publisher>Woodbury, NY: American Institute of Physics</publisher><subject>Analytical biochemistry: general aspects, technics, instrumentation ; Analytical, structural and metabolic biochemistry ; Biological and medical sciences ; Fundamental and applied biological sciences. Psychology</subject><ispartof>Review of scientific instruments, 1988-02, Vol.59 (2), p.307-313</ispartof><rights>American Institute of Physics</rights><rights>1989 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c326t-aa2c6983bd131c6d1ef6021bcdcf02fd680e84a628df165808cade710c822cb83</citedby><cites>FETCH-LOGICAL-c326t-aa2c6983bd131c6d1ef6021bcdcf02fd680e84a628df165808cade710c822cb83</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/rsi/article-lookup/doi/10.1063/1.1140246$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>314,780,784,1559,27924,27925,76390</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=7045243$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Gillies, G. T.</creatorcontrib><creatorcontrib>Kupke, D. W.</creatorcontrib><title>Improved magnetic suspension densimeter for biochemical reactions</title><title>Review of scientific instruments</title><description>An improved version of our magnetic suspension densimeter has been developed for use with samples of aqueous systems as small as 100 μl. The instrument’s sensitivity to a change in density of the solution under test (measured as a voltage shift) is 0.1 mV≊4.5×10−
6 g ml−
1, with a base‐line drift less than 9 μV/h. The nonlinearity of the densimeter’s response is less than 5 ppm over its calibration range. In this paper, we describe the new magnetic suspension circuit, discuss the precision limits of the instrument, and present the results of measurements made on a tetracarboxylate sequestering agent known as BAPTA which we use as a calcium‐ion indicator.</description><subject>Analytical biochemistry: general aspects, technics, instrumentation</subject><subject>Analytical, structural and metabolic biochemistry</subject><subject>Biological and medical sciences</subject><subject>Fundamental and applied biological sciences. Psychology</subject><issn>0034-6748</issn><issn>1089-7623</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1988</creationdate><recordtype>article</recordtype><recordid>eNp9j0tLAzEUhYMoWKsL_8Es3ChMvTdJM-myFB-FghtdD5mbRCOdB8lY8N87ZUpdCN7N2Xz3cD7GrhFmCErc4wxRApfqhE0Q9CIvFBenbAIgZK4Kqc_ZRUqfMNwcccKW67qL7c7ZrDbvjesDZekrda5JoW0yu8_a9S5mvo1ZFVr6cHUgs82iM9QPTLpkZ95sk7s65JS9PT68rp7zzcvTerXc5CS46nNjOKmFFpVFgaQsOq-AY0WWPHBvlQanpVFcW49qrkGTsa5AIM05VVpM2e3YS7FNKTpfdjHUJn6XCOXevcTy4D6wNyPbmTSM9dE0FNLxoQA551IM2N2IJQq92dsckV0bf_vKzvr_4L8DfgA8t3VP</recordid><startdate>19880201</startdate><enddate>19880201</enddate><creator>Gillies, G. T.</creator><creator>Kupke, D. W.</creator><general>American Institute of Physics</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>19880201</creationdate><title>Improved magnetic suspension densimeter for biochemical reactions</title><author>Gillies, G. T. ; Kupke, D. W.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c326t-aa2c6983bd131c6d1ef6021bcdcf02fd680e84a628df165808cade710c822cb83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1988</creationdate><topic>Analytical biochemistry: general aspects, technics, instrumentation</topic><topic>Analytical, structural and metabolic biochemistry</topic><topic>Biological and medical sciences</topic><topic>Fundamental and applied biological sciences. Psychology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Gillies, G. T.</creatorcontrib><creatorcontrib>Kupke, D. W.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Review of scientific instruments</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Gillies, G. T.</au><au>Kupke, D. W.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Improved magnetic suspension densimeter for biochemical reactions</atitle><jtitle>Review of scientific instruments</jtitle><date>1988-02-01</date><risdate>1988</risdate><volume>59</volume><issue>2</issue><spage>307</spage><epage>313</epage><pages>307-313</pages><issn>0034-6748</issn><eissn>1089-7623</eissn><coden>RSINAK</coden><abstract>An improved version of our magnetic suspension densimeter has been developed for use with samples of aqueous systems as small as 100 μl. The instrument’s sensitivity to a change in density of the solution under test (measured as a voltage shift) is 0.1 mV≊4.5×10−
6 g ml−
1, with a base‐line drift less than 9 μV/h. The nonlinearity of the densimeter’s response is less than 5 ppm over its calibration range. In this paper, we describe the new magnetic suspension circuit, discuss the precision limits of the instrument, and present the results of measurements made on a tetracarboxylate sequestering agent known as BAPTA which we use as a calcium‐ion indicator.</abstract><cop>Woodbury, NY</cop><pub>American Institute of Physics</pub><doi>10.1063/1.1140246</doi><tpages>7</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0034-6748 |
| ispartof | Review of scientific instruments, 1988-02, Vol.59 (2), p.307-313 |
| issn | 0034-6748 1089-7623 |
| language | eng |
| recordid | cdi_scitation_primary_10_1063_1_1140246 |
| source | AIP Digital Archive |
| subjects | Analytical biochemistry: general aspects, technics, instrumentation Analytical, structural and metabolic biochemistry Biological and medical sciences Fundamental and applied biological sciences. Psychology |
| title | Improved magnetic suspension densimeter for biochemical reactions |
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