Steristopper® Nr.19, for Vial with Neck ID: 19 - 22 mm, 2500 pc/PAK

Sterile stoppers made of cellulose have proven their worth for sterile sealing of bacterial cultures in test tubes and flasks for years. They are autoclavable, filtering but air permeable, sterilizable and intended for single use only. They are available in diameters up to 71mm. for the right choice of the appropriate sterile stopper it is important to measure the inner diameter of the glass, please consider tolerances of the glasses