Question

Which of the following USP Glass Type is NOT SUITABLE for parenteral packaging?

• A. Type I
• B. Type II
• C. Type III
• D. Type IV

Answer 1

The Correct Option is D

USP (United States Pharmacopeia) categorizes glass used for pharmaceutical packaging into different types based on their composition and properties. Understanding these types is crucial for ensuring the appropriate packaging is used for different kinds of medicinal products, particularly parenteral (injection-based) formulations.

1. Type I Glass: This is the highest quality glass, known as Borosilicate glass. It is highly resistant to thermal and chemical extremes, making it ideally suited for all types of pharmaceutical packaging, including parenteral preparations. It does not interact with the contents, maintaining the stability and safety of injectable drugs.
2. Type II Glass: Known as Treated Soda-Lime glass, it is formulated through a process that makes it as chemically durable as Type I but not thermally resistant. It is treated on the surface to resist leaching, making it also suitable for parenteral applications with certain limitations.
3. Type III Glass: Regular Soda-Lime glass, which has a lower resistance to chemical attack than Types I and II. While it might be used for certain medications, it is generally not recommended for parenteral solutions unless the contents are proven to be non-reactive with this glass type.
4. Type IV Glass: This is not commonly classified under the common USP glass types for parenteral use. Therefore, due to vague specifications and uncertainty in its application and safety, it is not suitable for parenteral packaging.

Therefore, the correct answer is that Type IV glass is not suitable for parenteral packaging. It lacks sufficient resistance and certification for safe use with injectable pharmaceuticals, unlike the other glass types that are conventionally used under controlled conditions.