รายละเอียดเอกสาร

This is a test method to determine the color strength of a dye sample relative to a reference dye by means of spectrophotometric transmittance easurements on solutions of each. It is a comparison of the color strength of the dyes in a chosen solvent which may or may not correspond to strengths when applied to a textile substrate. To be valid as a measurement of the relative color strength of a dye for a particular textile end-use, additional tests must be performed to demonstrate that the relative strength in solution is equal to the relative strength when applied to the textile substrate (see 5.4). The test is often used by dye manufacturers and users because of it speed, repeatability and reproducibility.