Polarimeter (Chemical) (CHEM-POL)
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 newer
LabQuest App: 1.6 or newer

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, 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.

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

RELATED TIL ENTRIES
What is the sample volume required by your Chemical Polarimeter?
What does the illumination value on the Chemical Polarimeter mean and what are its units?
I'm using a LabPro as my data collection interface for the Chemical Polarimeter. Do I need to follow any special instructions?
Do you have experiments written for the Chemical Polarimeter?
I'm not getting accurate results with the Chemical Polarimeter (CHEM-POL).

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

CALIBRATION
Because 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.

RELATED VERNIER PRODUCTS
Chemical Polarimeter Accessory Cells (CELLS-POL)