Vital Stain Kit, 7-Bottle Set

Vital staining is a microscopy technique in which dyes are applied to cells and tissue that remain alive, allowing structures to be observed in their active, intact state rather than in fixed or killed preparations. The stains in this set are chosen specifically for their ability to color living cells without destroying them, so that features such as nuclei, mitochondria, and other organelles can be distinguished under the microscope while the cell continues to function.

The set brings together seven dyes, each suited to different structures and specimen types. Janus green is a classic supravital stain for mitochondria, neutral red and brilliant cresyl blue are common for vacuoles and reticulocytes, methylene blue is a general-purpose vital stain, and Bismarck brown, cupric acetate, and cupric sulfate round out the range for varied tissue and cell work. Having them together lets a lab match the dye to the specimen rather than forcing one stain across every preparation.

Each stain is supplied in a 30 mL dropper bottle for controlled application directly to slides, and the solutions come as a mix of alcohol-based and aqueous preparations depending on the dye. A teacher's manual is included with staining procedures and background, and every bottle carries GHS-compliant labeling with safety and storage information. The stains are intended for laboratory and educational use in the microscopic study of living cells. Because the set contains alcohol-based reagents, it ships under the 49 CFR 173.4 small-quantity exception for domestic ground transport.