Which of the following is not true about guard column used in liquid chromatography?
A. It filters particles that clog the separation column
B. It extends the lifetime of separation column
C. It allows particles that cause precipitation upon contact with stationary or mobile phase
D. The size of packing varies with the type of protection needed
Answer:C
Which of the following is not true about guard column used in liquid chromatography?
A. It filters particles that clog the separation column B. It extends the lifetime of separation column C. It allows particles that cause precipitation upon contact with stationary or mobile phase D. The size of packing varies with the type of protection needed
Explanation: Guard column removes particles that cause precipitation upon contact with stationary or mobile phase. It is placed before the separation column.