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NSAW Half Shade Student Polarimeter for Laboratories NSAW-1870
by NSAW
Features |
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Brand Name : | NSAW |
Type of Product : | Half Shade Student Polarimeter |
Color : | White and Black |
Country of Origin : | India |
Item Code : | NSAW-1870 |
Reading : | Vernier Reading: 6 inch |
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NSAW Half Shade Student Polarimeter for Laboratories NSAW-1870 is a device used to measure the rotation of plane-polarized light caused by optically active substances. It is commonly used in chemistry and biochemistry labs to determine the concentration and purity of chiral compounds, such as sugars, amino acids, and pharmaceuticals.
The polarimeter consists of a light source, a polarizer, a sample tube, an analyzer, and a detector. The light source emits unpolarized light, which is then passed through a polarizer to produce plane-polarized light. The sample tube contains the optically active substance, which rotates the plane of polarization of the light. The analyzer is placed after the sample tube and can be rotated to measure the angle of rotation. The detector measures the intensity of the light passing through the analyzer.
The half shade student polarimeter is a specific type of polarimeter that uses a half-shade device to improve the accuracy of the measurement. The half-shade device consists of two polarizing filters, one fixed and one rotating, that are placed in front of the analyzer. The rotating filter is adjusted until the light passing through the analyzer is half-shaded, meaning that the intensity of the light is equal on both sides of the field of view. This technique reduces errors caused by variations in the intensity of the light source and improves the precision of the measurement.
To use the half shade student polarimeter, a sample of the optically active substance is dissolved in a solvent and placed in the sample tube. The analyzer is rotated until the light passing through the tube is half-shaded, and the angle of rotation is measured. The specific rotation of the substance can then be calculated using the equation:
\[ \alpha = \frac{\alpha_{obs}}{l \cdot c} \]
where α is the specific rotation, αobs is the observed rotation, l is the path length of the sample tube, and c is the concentration of the substance in the solution.
In conclusion, the half shade student polarimeter is a valuable tool for measuring the rotation of plane-polarized light caused by optically active substances. Its use of a half-shade device improves the accuracy and precision of the measurement, making it a reliable method for determining the concentration and purity of chiral compounds.
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8,999
(GST inclusive price)
7,626
(GST extra)
26.48% OFF
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