Patent ID: 7597851

Claim:
An automatic sampler, comprising: a needle adapted to draw a sample from a sample liquid bath and to inject the sample into a sample introducing portion which is in fluid communication with a column of a liquid chromatography; a first rinsing bath adapted to contain a first rinsing liquid; a second rinsing bath adapted to contain at least one kind of second rinsing liquid; an exchanging mechanism operable to exchange the second rinsing liquid in the second rinsing bath; and a controller, configured to execute, in accordance with selection of an operator, at least one of a first rinsing operation which soaks the needle in the first rinsing liquid in the first rinsing bath, and a second rinsing operation which soaks the needle in the second rinsing liquid in the second rinsing bath and exchanges the second rinsing liquid while the needle is kept inserted into the second rinsing bath.