Light-sensitive samples should be collected in which container?

• A. Amber bottle container
• B. Polypropylene container
• C. Polyethylene bottle container
• D. Volumetric flask

Answer: (A)

Light exposure can cause photodegradation of many samples, so protecting stored contents from light is essential. Amber glass blocks most UV and a large portion of visible light, helping keep light-sensitive materials stable during collection and storage. Among common containers, the amber bottle is specifically designed to minimize light transmission, making it the best choice for light-sensitive samples. Polypropylene and polyethylene bottles are often translucent or clear and can allow light to reach the contents unless they’re specially tinted, which isn’t the default. Volumetric flasks are intended for precise measurements and are usually clear, offering little protection from light. Thus, the amber bottle best safeguards samples from light-induced degradation.