Dye Penetrant Inspection (DPI) is a non-destructive testing process used on non-porous metal and ceramics to reveal surface cracks or defects. It involves applying liquid dye and a developing agent to the surface and inspecting under UV or white light. DPI is a quick and simple process, but is limited to smooth, non-porous surfaces. Liquid […]
Aniline dye is a synthetic organic compound used to color fabrics, leather, and wood. It was discovered accidentally by William Henry Perkin while trying to create a synthetic version of quinine. Aniline dyes come in a variety of colors and are known for their clarity. They are commonly used in the leather and woodworking industries […]
Acid dye is a type of dye that produces bright and long-lasting colors on animal hair fibers and silk. It comes in concentrated, powdered form and is easy to use. The dye bath is formed by dissolving the powder in vinegar, and the process is controlled by the use of salt. The application process takes […]
Contrast dye is used in CT scans, MRI, and X-rays to make injuries or diseases visible. It can be given intravenously, orally, or rectally, and patients should be aware of potential complications and follow instructions on eating and drinking before the test. Contrast dye is a pharmaceutical liquid used in computed tomography (CT) scans, magnetic […]
Hair dye can cause an allergic reaction due to a sensitivity to the chemical PPD, with symptoms ranging from mild to life-threatening. A patch test can help prevent a reaction. Anaphylaxis can occur in rare cases and requires immediate medical attention. A rare sensitivity to certain chemicals, especially a substance called p-phenylenediamine (PPD), can cause […]
