How prepare eosin yellow?

Eosin yellow, also known as eosin Y, is typically prepared by dissolving eosin powder in a solvent such as distilled water or ethanol. The concentration can vary depending on the intended use, but a common preparation involves adding about 1 gram of eosin to 100 mL of solvent. The solution should be stirred until fully dissolved, and it can be filtered to remove any undissolved particles. Once prepared, the eosin yellow solution can be stored in a dark container to prevent degradation from light.