Why Do HPLC and UPLC Columns Operate at High Pressures

question 11

Multiple Choice

Why do HPLC and UPLC columns operate at high pressures?

• A) The analysis is much faster when pressurized
• B) To keep air out of the column
• C) To increase the column lifetime
• D) The mobile phase is tightly packed into the column so it takes pressure to force it through
• E) none of the above

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Definitions:

Peritoneal Cavity

An abdominal space that lies between the parietal peritoneum (lining of the abdominal wall) and the visceral peritoneum (covering of the internal organs).

Renal Sinus

The renal sinus is a cavity within the kidney that is occupied by the renal pelvis, renal calyces, blood vessels, nerves, and fat.

Hilum

A part or structure in an organ where nerves and blood vessels enter or leave, commonly referenced in relation to the lungs or kidneys.

Cystitis

Inflammation of the bladder, often caused by a urinary tract infection, leading to symptoms like urgency and pain during urination.