Caps For Glass Tubes

Ideal for resealing of evacuated glass tubes and for sealing glass culture tubes. Economical way to recap glass tubes regardless of manufacturer. Prevents spills and evaporation by employing a liquid-tight seal. Can be frozen, agitated, or centrifuged without cracking or popping off (do not autoclave). Caps can be written on with indelible ink for easy sample identification. Available in seven transparent colors.