Cyanoditolyl tetrazolium chloride has been used to measure the redox activity of tumor cells. It has also been employed for direct epifluorescent microscopic enumeration of respiring bacteria in food samples and environmental samples, especially water samples.

A valuable stain in general histology and cytology. Gives sharp, clear-cut pictures of both nuclei and cytoplasmic structures. Also useful for differentiation of fungi.

A near-infrared fluorescent probe for detection of apoptotic cells, bacteria and other anionic membranes. The PSVue® 794 reagent kit contains components to provide a 1 mM solution of PSVue®794 in aqueous solution.

A long wavelength ultraviolet fluorescent probe for detection of apoptotic cells, bacteria, and other anionic membranes. The PSVue® 380 (formerly PSS-380) reagent kit contains components to provide a 1 mM solution of PSVue® 380 in aqueous solution.

For staining bacteria from cultures or specimens by the differential Gram stain method. Kit performs 150 tests.

The PSVue643^® kit contains 0.25mL of a 1mM solution of PSVue643^® in water. The compound has an absorbance max at 643nm and a fluorescence emission max at 658nm.

The PSVue^® 550 reagent kit contains components to provide ~0.5 mL of 1 mM solution of PSVue^® 550. The compound has an absorbance max at 553nm and fluorescence emission max at 615nm.

Vial contains 1mg of solid. PSVue^® Biotin can be complexed with streptavidin-coated quantum dots (not provided) for in vivo and in vitro use. Procedures to formulate and prepare are provided.

Method of staining acid-fast microorganisms, specifically mycobacterium. Procedure is similar to Ziehl-Neelson stain, but does not involve heating the slides.

Bacteriological stain kit used to identify acid-fast organisms, mainly Mycobacteria. Helpful in diagnosing Mycobacterium tuberculosis since its lipid rich cell wall makes it resistant to Gram stain.

Fluorochrome staining of mycobacteria in an acid-fast smear offers several advantages over traditional carbol-fuchsin methods. Lower magnification is required; fluorescent mycobacteria stand out brightly on a darkened background. Smaller numbers of mycobacteria are easily identified with a fluorescent stain.