Question

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 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).It allows particles that cause precipitation upon contact with stationary or mobile phase

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Q. Which of the following is not true about the guard column used in liquid chromatography?

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