A negative stain set colors the background of a smear rather than the bacteria (as a direct stain does). These stains have negatively charged functional groups so they can't bind directly to negatively charged bacteria. Kit Includes: 30ml Formalin-Nigrosin Solution 30ml Hydrochloric Acid 1% 30ml Congo Red 1% AQ DOT Info: Small quantity exemption 173.4 THIS PACKAGE CONFORMS TO 49 CFR 173.4 for domestic highway or rail transport only
For Laboratory Use Only. Not for drug, food or household use. Keep out of reach of children. For more information, refer to the Safety Data Sheet.