A polarimeter can be used to measure the optical activity or rotation value of a chemical substance.
A polarimeter usually consists of two Nicol prisms. The fixed polariser polarises the light from the light source linearly and the rotatable analyser behind it performs the same function. If the two polarisation filters are crossed, no light should pass through; the field of view seen by the observer should remain dark. If the sample substance is placed between the two polarisation filters, depending on the rotation value, a brightening may occur, which enables the rotation value to be measured. Since many other factors influence the rotation value (layer thickness of the sample, solvent, temperature, wavelength of the light, etc.), the specific rotation value is determined at a layer thickness of 10 cm, 100 ml of solvent and 1 g of optically active substance, and the other relevant parameters are also specified.
Scope of delivery:
polarimeter
Replacement lamp
100 ml tube
200 ml tube
