Livingstone Rubber Stopper, Two Holes, 21mm Base x 26mm Top x 28mm Height, 10 Pieces/Pack

Livingstone Rubber Stoppers are widely used in laboratories to seal containers such as test tubes, flasks, and bottles. They help prevent liquids or gases from escaping and keep the contents protected. These stoppers are acid-resistant and autoclavable, making them ideal for environments that require strong chemical resistance and cleanliness. Their rubber material also resists acids, alkalis, and ammonia, allowing them to cope with many common laboratory chemicals.