Qualities of packaging material
i. Neutral
ii. No interaction.
iii. Stability against environmental factor.
iv. Withstand wear and tear during handling.
v. Withstand changes in pressure and temperature.
vi. Labelled easily
vii. Non-toxic.
viii. Closure easily removable/replaceable
Disadvantages of glass
1) Glass is fragile,
2) Glass is heavy, that can increase transportation charges,
3) Glass containers may release alkali to aqueous preparations,
4) Flaking and weathering of glass are two serious issues related to glass.