Lead nitrate 1 %, alcoholic, serves as a highly specific laboratory agent for a wide range of applications. It shows particular suitability in microscopy, where it is frequently used as a fixing and staining agent. The chemical structure is based on lead(II) nitrate, an inorganic compound with the formula Pb(NO3)2, dissolved in ethanol. In this solution, one benefits from the solubility of lead(II) nitrate in alcohol. The addition of gum mastic, a resin with binding properties, improves the adhesion of the solution to surfaces and creates a durable coating. The solution can thus be used for protection, fixation, and identification of microscopic structures. The reaction of lead(II) nitrate with certain components of the sample under investigation produces specific color changes that are useful for distinguishing and identifying different structures or elements. It is a versatile laboratory tool that improves both the efficiency and accuracy of microscopic examinations.