Five-piece test tube stopper made for standard Pyrex or glass. Built-in tab for easier insertion/removal. Non-adhesive. Molded of high-density, thermoplastic rubber (½" / 12.5mm long). Instantly seals and improves accurac...

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Product Review

Five-piece test tube stopper made for standard Pyrex or glass. Built-in tab for easier insertion/removal. Non-adhesive. Molded of high-density, thermoplastic rubber (½" / 12.5mm long). Instantly seals and improves accuracy.

  • Gas and water-tight seal
  • Comes in a pack of five
  • Easy to mark with a permanent marker - washes off safely

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