Agilent Technologies PL-GPC 220, Руководство пользователя

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PL-GPC 220 User Manual 15
Introduction to PL-GPC 220
1
System Description and General Operation
PL-GPC 220 Autosampler
The carousel will accommodate 40 x 2 mL sample vials, 39 of these (positions
1 to 39 ) are used for sample injection. The 40 th or zero vial is dedicated as
the “index” vial and must remain on the carousel at all times. This index vial is
used during the initialization process of the autosampler and is used as a
waste container should an injection sequence malfunction. In this case, the
contents of the loop and injection system will be emptied into this index vial
to circumvent blockage due to precipitation of the polymer should the
instrument cool down. It is therefore important to keep an empty vial fitted
with a clean, shiny cap in the zero position of the carousel at all times.
Each of the vials is contained in an individual brass cup that glides across the
heated track of the carousel. Two heaters control the temperature of the
carousel; each can be independently set providing two zones of heating on the
carousel.