BUCHI PrepChrom C-700 - Manual (Page 25)

BÜCHI Labortechnik AG Description of function | 4
PrepChrom C­700 25/110
4­way aspiration valve
The 4­way aspiration valve allows to perform quaternary gradients. A 5 th port
can be used for air purge of flash columns.
Note
External connectors allow to plug in a solvent level sensor (see 10.3 Optional
accessories [
} page 102]. The maximum length of all external cables connected
to the system is 2 meters.
4.3.5 Fraction collector
After the detection of the signal (chromatogram), the eluent at the outlet of the
column (peaks) can be directed to glass tubes disposed on racks. A built­in
waste valve allows to choose between the collection or the rejection (waste) of
the liquid.
The collector is provided with 2 stainless steel racks for 18 mm diameter glass
tubes as standard. That represents in all 128 glass tubes.