{"id":2291,"date":"2017-07-14T16:43:05","date_gmt":"2017-07-14T23:43:05","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T07:00:00","slug":"2291","status":"publish","type":"post","link":"https:\/\/www.vernier.com\/til\/2291","title":{"rendered":"Can I use my third-party ISE with my Vernier equipment?"},"content":{"rendered":"<p>Maybe. The answer to this depends on a couple of things.<\/p>\n<p>1. Does your electrode have a BNC connector? If so, you can use it with the <a href=\"\/product\/electrode-amplifier\/\">Electrode Amplifier<\/a> (<nobr>EA-BTA<\/nobr>), the Go Wireless<sup>\u00ae<\/sup> Electrode Amplifier (GW-EA, <em>discontinued<\/em>), or the <a href=\"\/product\/go-direct-electrode-amplifier\/\">Go Direct<sup>&reg;<\/sup> Electrode Amplifier<\/a> (<nobr>GDX-EA<\/nobr>). The EA-BTA amplifier can be used with electrodes having an output of -450 mV to 1100 mV. The GW-EA and GDX-EA amplifiers can be used with electrodes having an output of -1000 mV to +1000 mV. Your third-party ISE voltage output must fall within this range.<\/p>\n<p>2. Because the range of our amplifiers are so wide, your ISE may require only a very small part of this voltage range. Though you&#8217;ll compromise, somewhat, when it comes to resolution, you can still get a fairly good reading.<\/p>\n<p>To use a third-party ISE with an electrode amplifier, connect the ISE to the an electrode amplifier and connect it to a Vernier interface. Ensure the units are set to mV in the data-collection program. This setting will be remembered for subsequent uses of the sensor.<\/p>\n<p>Change the data-collection mode to Events with Entry. Enter the name for the Event, i.e., Concentration (mg\/L). A graph of Potential (mV) vs. Concentration will be graphed during data collection. The graph will be an exponential plot. To linearize it, create a new calculated column of ln Concentration and plot mV vs. ln Concentration. From there you can create a linear curve fit, then interpolate and determine the concentration of an unknown. To convert an interpolated ln Conc value back to the concentration you&#8217;ll need to take the inverse ln.<\/p>\n<p>    Some common ISE voltage ranges (approximate):<br \/>\n    Nitrate: 25 mV to 260 mV<br \/>\n    Chloride: 0 mV to 240 mV<br \/>\n    Calcium: -45 mV to 100 mV<br \/>\n    Ammonium: -55 to 240 mV<br \/>\n    dissolved CO2: -20 mV to 90 mV<br \/>\n    Ammonia: -210 mV to 160 mV<br \/>\n    Lead: -230 mV to -115 mV<br \/>\n    Copper: 70 mV to 240 mV<br \/>\n    Sodium: -80 mV to 260 mV<br \/>\n    Fluoride: -100 mV to 200 mV<br \/>\n    Bromide: -40 mV to 140 mV<\/p>","protected":false},"excerpt":{"rendered":"<p>Maybe. The answer to this depends on a couple of things. 1. Does your electrode have a BNC connector? If so, you can use it&#8230;<\/p>\n","protected":false},"author":11015,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"tags":[2729,647,1292,619,3758],"class_list":["post-2291","post","type-post","status-publish","format-standard","hentry","tag-bnc","tag-electrode","tag-ion","tag-ise","tag-third-party"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts\/2291","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/users\/11015"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/comments?post=2291"}],"version-history":[{"count":0,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts\/2291\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/media?parent=2291"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/categories?post=2291"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/tags?post=2291"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}