Polarimeter

Polarimeter

Polarimeter Polarimeter Instrument Is For Measurement Of Optical Rotations, For Study Of Polarisation Effects And For Quick And Easy Determination Between Right-Handed Sugars Such As Dextrose And Left Handed Sugar Such As Fructose. Instrument Essentially Consists Of A Pair Of Polarizes Arrange In A Straight Line, One Of Which (Analyzer) Can Be Rotated With Respect To The Other (Polarizer) And The Rotation Measured On A Divided Circle. The Analyzer Is Rotated Till It Is Crossed With The Polarizer. In This Position The Planes Of Polarization Of The Polarizer And The Analyzer, Are Mutually Perpendicular, So That There Is No Transmission Of Light Across The Pair. Now If A Tube Containing An Optically Active Solution Is Introduced Between The Polarizer And The Analyzer, The Light Transmission Is Partially Or Wholly (If The Optical Rotation Of The Liquid Equals 90o) Resorted. The Analyzer Is Rotated Again To Obtain The No Transmission Position. This Rotation Equals The Optical Rotation Of The Liquid. Since It Is Difficult To Recognize The Actual No Transmission Position, One Is Able To Obtain A Range Only For No Transmission. The Definition Of This Range Is Quite Subjective.