Microbiology is an important field of biology and medicine and deals with microorganisms (bacteria, fungi, protozoa or viruses) and their habitats and conditions. For this purpose, it is essential to produce pure culture media on which the corresponding microorganisms can grow. In order to avoid the introduction of foreign substances, the bottles and flasks must be covered but not sealed gas-tight. Air exchange is essential for culture growth.

• Suitable for neck 38mm
• Metal caps allow an exchange of air in the media bottle, creating a positive environment for the growth of microorganisms