The instrument’s stray light is defined as (Y – X). The aim of instrument validation is to confirm that the instrument offers adequate performance for the inspection and manufacture of products.
This value is used to evaluate the level of stray light. When performing an actual validation, it is important to select the appropriate inspection items and to set the evaluation criteria based on a sound understanding of the required instrument performance.
Validation can be performed on a diverse range of objects, from tangible items such as plant and equipment to intangible work procedures and processes.
How many multiple emission lines (or absorption peaks) should be used to confirm the wavelength accuracy and what error is permitted depends on the level of instrument performance required for the development and manufacture of the product.Initially, the transmittance is measured with a shutter block that completely shuts out all light mounted in the sample compartment (transmittance X).Next, the transmittance is measured with the aqueous solution of Nal in the sample compartment (transmittance Y).Study instruments and tools must be provided at the time of protocol submission.Information that establishes the validity of the instrument/tool should be included in the protocol.
A spectrophotometer shines light at various wavelengths onto the sample and investigates the degree of absorption, reflection, and transmission of the light to perform qualitative or quantitative analysis of the sample.