Answer Posted / bharath
Polarimetry measures the rotation of polarized light as it
passes through an optically active fluid. The measured
rotation can be used to calculate the value of solution
concentrations; especially substances such as sugars,
peptides and volatile oils. A polarimeter consists of a
polarized light source, an analyzer, a graduated circle to
measure the rotation angle, and sample tubes.
The polarized light passes through the sample tube and
exhibits angular rotation to the left (-) or right (+). On
the side opposite the polarizer is the analyzer. Using
optics, visual fields are manually adjusted by the user to
measure the optical rotation angle.
Polarimeters offer high accuracies where precision is
critical in determining the concentration of samples. Cole-
Parmer offers manual polarimeters where you look through a
viewing scope to read values on a vernier scale, and
semiautomatic polarimeters that have a digital display.
Polarimeters can measure in angle of rotation (¡),
International Sugar Scale (°Z), or both.
Is This Answer Correct ? | 19 Yes | 2 No |
Post New Answer View All Answers
when we talk about change in entropy we consider total entropy means of surround +entropy of system but when we talk about change in Gibss free energy we consider entropy of system.explain with reason.
if your product is soluble in 0.1n hcl and water then which you choose as media from these 2 media?
AT WHAT CONDITIONS WILL YOU ANALYSE A SAMPLE,WHICH ARE PRESERVED AT OTHER THAN THE AMBIENT CONDITIONS?(ie COLD STORAGE SAMPLES BELOW 20* CENTIGRADE?
How they found 1mL of K.F reagent is equivalent to 5mg of water and if we change the composition of K.F reagent, is it can neutralize more amount of water?
How require to develop GC method? how to select diluent, GAS, column selection and other chromatographic conditions?
what is mean by ambient temperature?
Explain the relations between number of carbon atoms in alkanes and retention time ?
can we use the same detector in HPLC as well GC and what could be the differences we can find in the final chromato graph in any aspects?
why we are using benzene, anyline in acetic anhdride assay titration method?
what is the importence and role of LCMS and LCMS/MS and their applications? which type of compounds are analysis by lcms?
please explian me about area normalisation method,diluted standard method,impurity vs impurity and which one has to be selected in method development
Why six unit used for precision?
what is the purge flow & how to calculate
Tell me about analytical method validation in QC
In Dissolution Test why limit is define Q+5% what is the role of +5%.