Page 49 - Illustrated Pocket Dictionary of Chromatography

44 CREEP

tial liquid-liquid extractions. The probability that a solute will appear
in the nth tube after r transfer events is:

-
n (
P nr, = r p q r n) ( n r - )
n !)
!(
!
where p is the probability that the analyte will be transferred and q
that it will not be transferred.
creep The by-product of liquid leak in an LC union when the mobile
phase or sample contains dissolved salts. The sign of creep is a white
deposit along the union.

The white salt deposit along the outlet check valve union is creep. This can
indicate that salts have deposited in other internal areas of the system as well.

crimper/crimp top A crimp top is a nonthreaded cap used as a
bottle closure. The associated vial has a thick lip that the crimper
forms the cap around to form a seal.