The index of refraction of a medium with respect to air is equal to the ratio of the sine of the indiens angle of a light beam in air to the sine of the angle of refraction of the refracted ray in the given medium.
Unless otherwise stated, the refractive index is measured at 589.3 ± 20 °C with reference to the wavelength of the sodium D-line (λ = 0.5 nm).
Refractometers normally determine the critical angle. In such an apparatus, the essential part is a prism with a known refractive index in contact with the liquid to be examined.
The instrument is calibrated using certified reference materials.
When using white light, the refractometer is provided with a compensation system. the instrument gives accurate readings to at least the third decimal place and is equipped with a working tool at the prescribed temperature. The thermometer is rated at 0,5°C intervals or less.
Optical rotation is the property exhibited by chiral substances to rotate the polarization plane of polarized light.
Optical rotation is considered positive (+) for left-handed items and negative (-) for left-handed items.
Our organization, EUROLAB, provides testing services by our professional engineer staff within the scope of the 01/2008:20206 refractive index test standard, within the framework of laboratory testing services.
To get an appointment, to get more detailed information or to request an evaluation, you can ask us to fill in our form and reach you.
EUROLABreporting and certification activities, United Accreditation Foundation (UAF), Turkish Accreditation Agency (TÜRKAK) ve Enterprise Accreditation Foundation (EAF) based on the accreditation provided by the accreditation body. The Enterprise Accreditation Foundation (EAF) accreditation body is also a signatory of the United Nations (UN GLOBAL COMPACT) organization.
