Smartline Autosampler 3900 Manual / Handbuch V 1508 03/2007

About AS 3900 11
About AS 3900
AS 3900 has been designed to meet the challenge of the modern
analytical laboratory: robust, cost-effective and easy to implement.
Column temperature control and sample cooling are available for
consistent results. High-resolution syringe control guarantees superior
precision for injection and reagent addition. And, for quick service, the
entire injection valve can be replaced in seconds! The use of these and
many more features is described in this manual to help you exploit the full
potential of AS 3900.
PASA, a robust injection concept.
Loop injection with Pressure Assisted Sample Aspiration (PASA) is a
proven concept that combines high precision with simplicity and reliability.
No moving around with the sample needle. Reduced risk for bubbles in
the sample line. No needle port that wears and contaminates. There is
only intelligent valve switching and highly accurate syringe control. Yet,
three injection modes can be selected: full loop, partial loop filling and µl
Pick-up for maximum precision, maximum flexibility and zero sample
loss.
Fig. 2 The PASA injection concept.
Air pressure