{"id":2591,"date":"2018-10-19T14:56:24","date_gmt":"2018-10-19T21:56:24","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T07:00:00","slug":"2591","status":"publish","type":"post","link":"https:\/\/www.vernier.com\/til\/2591","title":{"rendered":"Chemical Polarimeter Troubleshooting and FAQs"},"content":{"rendered":"

Polarimeter (Chemical)<\/a> (CHEM-POL<\/nobr>)
\nSpecifications and User Guide<\/a><\/p>\n

TROUBLESHOOTING
\n– Primary Test:
\nMake sure you are using a current version of the software.
\n Software Requirements:
\n Logger Pro<\/i>: 3.8.5 or newer
\n LabQuest App: 1.6 or newer<\/p>\n

Connect the two Vernier Polarimeter cables to their respective ports on your Vernier interface. Start the data-collection program and choose New from the File menu. NOTE: In Logger Pro<\/i>, wait until a graph of Illumination (rel) on the y-axis and Angle on the x-axis appears before continuing. Start data collection and rotate the analyzer, a cosine squared wave should appear on the graph and both the illumination and angle readings should change.<\/p>\n

**If you are using a LabPro interface, please refer to these additional instructions:
\nI'm using a LabPro as my data collection interface for the Chemical Polarimeter. Do I need to follow any special instructions?<\/a><\/p>\n

RELATED TIL ENTRIES
\nWhat is the sample volume required by your Polarimeter?<\/a>
\nWhat does the illumination value on the Polarimeter mean and what are its units?<\/a>
\nI'm using a LabPro as my data collection interface for the Chemical Polarimeter. Do I need to follow any special instructions?<\/a>
\nDo you have experiments written for the Polarimeter?<\/a>
\nI'm not getting accurate results with your Polarimeter.<\/a><\/p>\n

SPECIFICATIONS
\n– Encoder Resolution: 0.25 degrees
\n– Accuracy (optical rotation measurements): +\/-1 degree
\n– Sensitivity: typically up to OD 2
\n– Optical Encoder: Bidirectional, quadrature encoder, 360 cycle per revolution
\n– Light Source: LED
\n– Wavelength (nominal): 589 nm<\/p>\n

CALIBRATION
\nBecause you are taking relative measurements of angle, you should perform a new calibration each time you use the Polarimeter. See the user guide for details.<\/p>\n

RELATED VERNIER PRODUCTS
\nChemical Polarimeter Accessory Cells<\/a> (CELLS-POL<\/nobr>)<\/p>","protected":false},"excerpt":{"rendered":"

Specifications and User Guide TROUBLESHOOTING – Primary Test: Make sure you are using a current version of the software. Software Requirements: Logger Pro: 3.8.5 or…<\/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":[4307,4309,4312,4308,720,4311,4310],"class_list":["post-2591","post","type-post","status-publish","format-standard","hentry","tag-chem-pol","tag-chem-polmain","tag-chempol","tag-chempolmain-chem-pol-chem-polmain","tag-maintil","tag-pol","tag-polarimeter"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts\/2591","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=2591"}],"version-history":[{"count":0,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts\/2591\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/media?parent=2591"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/categories?post=2591"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/tags?post=2591"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}