This transparent polypropylene cap for Test tubes proves to be an excellent protection to thecontents to the tubes. The grooves inside the cap tighten the fitting on the tube while the outergrooves would hold identification labels. The built in seal ring would set in the tube making thecombination a leak proof one

This transparent polypropylene cap for Test tubes proves to be an excellent protection to thecontents to the tubes. The grooves inside the cap tighten the fitting on the tube while the outergrooves would hold identification labels. The built in seal ring would set in the tube making thecombination a leak proof one