Biebrich scarlet is commonly used as a plasma stain, but can also be used to stain vaginal smears, pancreas samples, and more. 

When handling Beibrich scarlet, take caution to keep your skin covered and wear gloves, a mask, and lab goggles. Biebrich scarlet is an acute oral and dermal toxin, with added inhalation toxicity. Biebrich scarlet is also a skin and eye irritant.