Alkaline alcohol with KOH (potassium hydroxide) is a solution used in various applications in histology, histopathology and metallography. The solution typically consists of a mixture of alcohol, usually ethanol or methanol, and a specific concentration of KOH.

In histology and histopathology, alkaline alcohol with KOH is commonly used for decalcification of bone tissue and for digestion of tissue specimens prior to the application of specific stains. The alkaline solution helps raise the pH in the tissue, facilitating decalcification and removal of proteins and other structures that may be interfering with staining.

In metallography, alkaline alcohol with KOH is used as an etchant to visualize the surface structure of metals and alloys. The alkaline solution reacts with the metal surface to produce selective corrosion that reveals grain and phase boundaries and various microstructures. The use of alkaline alcohol solution enables precise and effective characterization of metal samples for research and quality control.

Alkaline alcohol with KOH is therefore a versatile solution that has important applications in both tissue analysis and metallography.