Heinz Herenz Steristoppers No. 21.5, for Vial with Neck ID: 17.5 - 21.5 mm, 3000 pc/PAK

The original Heinz Herenz Steristopper are available in various sizes, shapes and packaging units, and custom-made products are also possible. Autoclavable up to 200°C Bacteria-filtering Can be sterilized Air-permeable Inexpensive Please note: For single use only