AmScope SK-3N Negative Stain Kit of Three Chemicals for Preparing Microscope Slides

Three negative stains for staining sample backgrounds, as opposed to the specimens themselves. The stains are designed to increase contrast for brightfield microscopy. The kit includes safety data sheets and one 30 ml dropper bottle for each of the followings:

--Hydrochloric Acid (1% in alcohol solution)
--Congo Red (1% aqueous solution)
--Formalin-Nigrosin Solution