Biological Stain series Driplok venting wash bottles pre-printed for five popular biological stains. Printed for Lugols Iodine Solution, Crystal Violet, Gram Color De-coloring Solution, Gram Iodine Solution and Safranin Solution. Printed information includes hazard warning symbols where relevant and instructions for use. Dark colored stain bottles are printed in light colors for easy recognition of contents.

    
Bottles with patented DripLok system 
This venting system consists of a valve specifically designed to allow volatile solvent vapors to escape, but seals completely when in use to dispense a powerful, spatter-free jet of solvent.