Product Overview

Loeffler’s Methylene Blue is a high-intensity basic stain used primarily for the visualization of bacterial morphology and cellular detail, especially in gram-variable or weakly staining organisms. Originally developed by Friedrich Loeffler, this formulation features a stronger concentration of methylene blue than standard preparations, enhancing its ability to stain bacterial nuclei, metachromatic granules, and background tissue with deep blue coloration.

Widely used in microbiology and histology, Loeffler’s Methylene Blue is particularly valuable for identifying Corynebacterium diphtheriae, where it highlights Babes-Ernst granules (volutin) with distinct contrast. It is also used as a simple stain or counterstain in a variety of procedures involving blood smears, sputum samples, and epithelial cells.

Key Features:

High-concentration methylene blue for superior contrast

• Highlights bacterial nuclei, cytoplasm, and granules
• Ideal for identifying Corynebacterium diphtheriae and other gram-variable species
• Can be used as a simple stain or counterstain in differential procedures
• Suitable for clinical, microbiological, and instructional microscopy
• Produces vivid blue staining for enhanced microscopic visualization

Loeffler’s Methylene Blue provides clear, reliable results for bacterial visualization and is a versatile tool in diagnostic microbiology, particularly when precision and clarity are critical.