Question

Whole container test is used to test the quality of which of the following glass?

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

Hint:

Type II = Surface Treated. Grinding ruins it, so we test the "Whole" container.

Answer 1

The Correct Option is B

Step 1: Concept
Glass containers used in pharmacy are tested for their hydrolytic resistance to ensure they do not leach alkali into the formulation.

Step 2: Meaning
There are two main tests: the Powdered Glass Test (for Types I, III, and NP) and the Water Attack Test (Whole Container Test) specifically for Type II glass.

Step 3: Analysis
Type II glass is treated soda-lime glass where the surface alkali is neutralized using sulfur dioxide. Since the resistance is only on the surface, grinding it into powder (as in the powdered glass test) would expose the untreated interior. Therefore, the test must be performed on the "whole container" to check surface resistance.

Step 4: Conclusion
Thus, the whole container test (Water Attack Test) is the standard quality test for Type II glass.

Final Answer: (B)