This kit is used to determine if bacteria are Gram-positive or Gram-negative. Kit Includes: 1 X 500mL Dilute Lugols 1 X 500mL Crystal Violet 1 X 500mL Safranin O, 1% Aqueous 2 X 1L Ethanol, 95% DOT Info: UN1170, Ethanol, 3, II, Ltd Qty WARNING: This product can expose you to chemicals including Crystal Violet and Methanol/Methyl isobutyl ketone, which are known to the State of California to cause cancer and reproductive harm. For more information go to http://www.P65Warnings.ca.gov.