Ne vardır the faktörler o etki ölçüm sonuçlar of dijital refraktometre?
Refractive index is a simple and accurate method to identify the purity of organic compounds. For many binary systems, the refractive index has a fixed relationship with the composition, so it is often used as a parameter to detect the composition. Refractive index is an important optical property of transparent materials. When the refractive index of the material to be tested is 1.3000-1.7000, the measurement by total reflection method has the advantages of convenient and rapid operation, low requirements for environmental conditions, and no need for monochromatic light sources. A refractometer is an instrument made by the total reflection method and specially used to measure the refractive index of transparent or translucent liquids. Using the Abbe refractometer to measure the refractive index of liquid to determine its composition is one of the commonly used analysis and detection methods in the production and scientific research of petrochemical, light industry and food.
Etki Faktörler ve Kontroller
sıcaklık
At farklı sıcaklıklar, the refractive index of the same medium is different, so the refractive index of different media must be compared at the same temperature. The refractive index of transparent materials is closely related to its temperature and composition. The refractive index of the solvent is genellikle belirlenen at a sıcaklık aralık of ({{{}}) derece . The refraktometre olmalı olmalı yerleştirilmiş at the karşılık gelen sıcaklık için iki saat önce it can be used for measurement.
Olay ışık dalga boyu
The etki of the medium on the propagation hız of farklı dalgaboyları of light is different, so the refractive index of the same medium measured by incident light of different wavelengths is different. The refraktometre selects the D line 589.3mm of the sodyum yellow light as the incident light through the Amish dispersion prism
Gereksinimler için kırıç indeks of the substance to be ölçülen
The aralık of refraktif indeks of maddeler o olabilir ölçülebilir by a refraktometre is %1.30~1.70iii.
Göreceli nem
Gereksinimler için göreceli nem: <85% 3 The standard working curve of the refractometer Firstly, at normal pressure and temperature of 30°C, use a refractometer to measure the refractive index of binary mixed solutions with different proportion concentrations, and determine the relationship between the molar composition of the solution and the refractive index , to obtain the standard curve of solution molar composition and refractive index at this temperature.
