"protect from light" in usp means:
- A- air tight container.
- B- plastic container.
- C- Light resistant container***
- D- Amber glass.
- E- Amber plastic.
The correct answer is: C- Light resistant container*
Here's why:
- "Protect from light" in USP:
The United States Pharmacopeia (USP) is an official compendium of quality standards for medicines and dietary supplements in the United States. When the USP indicates "protect from light," it specifically refers to storing the substance in a container that minimizes exposure to light.
- Airtight container:
While an airtight container can be beneficial for certain reasons, it doesn't necessarily block light.
- Plastic container:
Not all plastic containers are light-resistant. Some types of plastic allow light to pass through, potentially compromising the stability of the substance.
- Amber glass:
Amber glass is a common type of light-resistant container used in pharmaceutical and cosmetic packaging. It blocks out most harmful wavelengths of light, protecting the contents from degradation.
- Amber plastic:
While some amber-colored plastics offer some light protection, they may not be as effective as amber glass, and their light-blocking properties can vary depending on the specific plastic type and thickness.
Therefore, the most accurate interpretation of "protect from light" in the USP context is to store the substance in a light-resistant container, which could include amber glass or specific types of light-blocking plastic.
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