It is designed for efficient storage and handling of Drosophila specimens. Made from high-quality polypropylene (PP), these bottles are durable, lightweight, and resistant to cracking and breaking. The 177ml (6oz) capacity is ideal for Drosophila specimen cultivation and research. Each bottle comes in a convenient bag packaging of 200, making it an economical choice for laboratories handling large quantities of Drosophila specimens. These bottles provide an excellent solution for specimen storage, ensuring the integrity of your research work.