Gram Staining

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Gram Staining

5 years ago

~0.2 mins read
This is a laboratory procedure used to differentiate between gram positive and gram negative bacteria.   Materials use for the procedure includes ; crystal violet(primary stain), gram's iodine(mordant), 95% Ethanol(decolorizer), safranin(secondary stain).    
  If the laboratory procedure yields a purple colouration the bacteria is Gram positive but if it yields a red or pink colouration the bacteria is Gram negative. 
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