Dionex AS50 Autosampler

The Dionex AS Autosampler precisely delivers from 1 to 8,000 μL of sample to an injection valve. The injection volume range delivered by a particular AS depends on the size of the sample syringe and the sampling mode.

Modes

In normal mode, sample is delivered to a single system and a sample loop is installed on the injection valve.

In concentrate mode, the AS delivers sample to a Dionex ultra-low pressure concentrator column.

In sequential concentrate mode, a diverter valve allows sample to be delivered to two independent channels or IC systems on which Dionex ultra-low pressure concentrator columns are installed.

During sampling, the tray remains stationary and a sampling needle arm moves from position to position. Up to 99 injections can be taken from each vial or well.

The AS can be controlled locally, from the front panel keypad and display, or remotely, with a personal computer running Windows 2000 or Windows XP and Chromeleon Chromatography Data Management System software (Release 6.7 or later), or Chromeleon Xpress (Release 1.0 or later). Limited remote control is also available, using TTL and relay signals.

For communication between the AS and the software, the AS is connected to a USB (Universal Serial Bus) port on the computer, USB hub, or other Dionex module equipped with a USB hub.

Injections per Vial: 1 to 99

Variable Volume Range: If the sample syringe is 1,000 μL or less:

1.0 to 99.9 μL in 0.1 μL increments; 100 to 1,000 μL in

1 μL increments (normal or sequential mode) 100 to 1,000 μL in 1 μL increments (concentrate or sequential concentrate mode)

If the sample syringe is 5,000 μL: 1.0 to 99.9 μL in 0.1 μL increments; 100 to 4,700 μL in 1 μL increments (normal or sequential mode) 100 to 4,700 μL in 1 μL increments (concentrate or sequential concentrate mode) 1,000 to 4,700 μL in 1 μL increments (simultaneous mode)

If the sample syringe is 10,000 μL: 1.0 to 99.9 μL in 0.1 μL increments; 100 to 8,000 μL in 1 μL increments (normal or sequential mode) 100 to 8,000 μL in 1 μL increments (concentrate or sequential concentrate mode) 1,000 to 8,000 μL in 1 μL increments (simultaneous mode)