Amber glass bottles with stoppers, like the one shown in your image, are commonly used for storing light-sensitive substances. Here are some key features:

1. UV Protection: The amber color of the glass helps protect the contents from harmful UV light, which can degrade certain substances.
2. Secure Stopper: The stopper, often made of plastic or ground glass, provides a tight seal to prevent leaks and contamination
3. Durability: Made from high-quality glass, these bottles are sturdy and resistant to breakage
4. Non-Reactive: Glass is chemically inert, meaning it won’t react with the contents, ensuring the purity of the stored substance
5. Versatile Use: Suitable for storing various types of liquids and solids, including chemicals, pharmaceuticals, and reagents
6. Easy Pouring: Some designs feature a no-drip pour lip for clean and easy dispensing of contents

These features make amber glass bottles with stoppers a reliable choice for safely storing and handling light-sensitive substances.