The Gram stain is one of the most important differential staining techniques used by microbiologists to determine if bacteria are Gram-positive or Gram-negative. Kit Includes: 4 x 25mL Ethyl Alcohol, Denatured, 95% 1 x 30mL Crystal Violet Ammonium Oxalate 1 x 30mL Safranin O, 1% Aqueous Solution 1 x 30mL Iodine, Potassium Iodide Solution DOT Info: Small quantity exemption 173.4 THIS PACKAGE CONFORMS TO 49 CFR 173.4 for domestic highway or rail transport only 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.