Question

Which of the following statement is false for osmotic pumps?

(a) The pump has three concentric circle

(b) The innermost is the drug reservoir

(c) The drug is contained a permeable polyester bag

(d) Outer most rigid rate controlling semipermeable membrane

I got this question in an online quiz.

The query is from Biopharmaceuticals topic in section Biopharmaceuticals of Drug Biotechnology

Answer 1

The correct option is (c) The drug is contained a permeable polyester bag

The best I can explain: The pump is made of three concentric layers. The innermost reservoir is contained in a collapsible impermeable polyester bag. The outermost is a rigid, rate controlling semipermeable membrane made from substituted cellulosic polymers.