{"id":4187,"date":"2018-05-18T22:16:15","date_gmt":"2018-05-19T05:16:15","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T07:00:00","slug":"4187","status":"publish","type":"post","link":"https:\/\/www.vernier.com\/til\/4187","title":{"rendered":"What is the difference between the Go Direct Electrode Amplifier (GDX-EA) and the Go Direct ISE Amplifier (GDX-ISEA)?"},"content":{"rendered":"

Go Direct®<\/sup> Electrode Amplifier<\/a> (GDX-EA<\/nobr>) is the amplifier that comes as part of:
\n      Go Direct®<\/sup> pH Sensor<\/a> (GDX-PH<\/nobr>)
\n      Go Direct®<\/sup> Tris-Compatible Flat pH<\/a> (GDX-FPH<\/nobr>)
\n      Go Direct®<\/sup> Glass-Body pH Sensor<\/a> (GDX-GPH<\/nobr>)
\n      Go Direct®<\/sup> ORP Sensor<\/a> (GDX-ORP<\/nobr>)
\nIt has two measurement channels: pH and Potential (mV) and is shipped with the appropriate channel set as the default. It can also be purchased separately, in which case it is set to Potential (mV). <\/p>\n

Go Direct®<\/sup> Ion-Selective Electrode Amplifier<\/a> (GDX-ISEA<\/nobr>) is the amplifier that comes as part of:
\n      Go Direct®<\/sup> Chloride Ion-Selective Electrode<\/a> (GDX-CL<\/nobr>)
\n      Go Direct®<\/sup> Calcium Ion-Selective Electrode<\/a> (GDX-CA<\/nobr>)
\n      Go Direct®<\/sup> Ammonium Ion-Selective Electrode<\/a> (GDX-NH4<\/nobr>)
\n      Go Direct®<\/sup> Nitrate Ion-Selective Electrode<\/a> (GDX-NO3<\/nobr>)
\n      Go Direct®<\/sup> Potassium Ion-Selective Electrode<\/a> (GDX-K<\/nobr>)
\nIt has six measurement channels: Chloride (mg\/L), Calcium (mg\/L), Ammonium (mg\/L), Nitrate (mg\/L), Potassium (mg\/L), and Potential (mV), and is shipped with the appropriate channel set as the default. It can also be purchased separately, in which case it is set to Potential (mV). <\/p>\n

Note that for both of these amplifiers, the selected channel must match the attached electrode. For example, changing the ISE Amplifier to the Nitrate (mg\/L) channel will not actually measure nitrate concentration unless there is a Go Direct®<\/sup> Nitrate Ion-Selective Electrode BNC<\/a> (GDX-NO3-BNC<\/nobr>) attached. <\/p>\n

If you wish to purchase other electrodes and change the channels of your amplifier to match, see How do I change the displayed measurement channel on my Go Direct Electrode Amplifier or ISE Amplifier?<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"

is the amplifier that comes as part of:                         It has two measurement channels: pH and Potential (mV) and is shipped with…<\/p>\n","protected":false},"author":1073,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"tags":[6564,7027,6519],"class_list":["post-4187","post","type-post","status-publish","format-standard","hentry","tag-gdxea","tag-gdxisea","tag-gdxmain"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts\/4187","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\/1073"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/comments?post=4187"}],"version-history":[{"count":0,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts\/4187\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/media?parent=4187"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/categories?post=4187"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/tags?post=4187"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}