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A stain is a discoloration that can be clearly distinguished from the surface, material, or medium it is found upon. They are caused by the chemical or physical interaction of two dissimilar materials.
Sep 13, 2019 · Hans Christian Gram, the inventor of the Gram staining technique, was a pioneering biologist who devised the system of classification which led to as many as 30,000 formally named species of...
Study with Quizlet and memorize flashcards containing terms like how did gram stain get its name?, what is the gram stain actually differentiating between in different bacteria?, what colour do Gram + bacteria stain? and more.
May 26, 2021 · In a simple stain, a bacterial smear is stained with a solution of a single dye that stains all cells the same color without differentiation of cell types or structures. The single dye used here in our lab is methylene blue, a basic stain.
Stain is composed of the same three primary ingredients as paint (pigment, solvent (or vehicle), and binder) but is predominantly vehicle, then pigment and/or dye, and lastly a small amount of binder. Much like the dyeing or staining of fabric, wood stain is designed to add colour to the substrate (wood and other materials) while leaving some ...
Thus the picric acid, which is yellow in colour, is a stain (dye). The colour of picric acid is due to the chromophoric nitro group (NO 2), and its staining property is due to the auxochromic hydroxyl group (OH), which imparts the molecule the property of ionization or electrolytic dissociation.
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Feb 15, 2024 · Primitive stains and pigments along with dyes on wood have their earliest being in some of the oldest civilizations. As a matter of fact, Egyptians depended on organic product to dye the wood which they contributed to furniture and art.
