Phenolphthalein is a commonly used pH indicator in acid-base titrations. It remains colorless in acidic solutions and changes to pink in basic solutions (pH above 8.2), making it an effective tool for visually identifying the endpoint of a titration.
Giemsa Stain Powder is a dry mixture of dyes used to prepare Giemsa stain, which is frequently utilized in microscopy for visualizing blood cells and parasites such as Plasmodium (the causative agent of malaria). It colours nuclei blue to purple and imparts a pale pink hue to the cytoplasm, facilitating a detailed analysis of cell morphology.
Methyl Red is a pH indicator dye that shifts color according to acidity levels. It appears red in acidic solutions (pH below 4.4) and yellow in basic solutions (pH above 6.2), featuring an orange transition in between. This dye is widely used in microbiology and chemical titrations to monitor pH changes.
