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