Waters HPLC - Waters Prep Series Modules

Waters Prep series 1-5
• Space for three analytical or semi-prep columns
• One 2-inch preparative column, and/or an M-1000 compression chamber
for PrepPak
®
cartridges.
Rheodyne 7725i injector – For small scale injections, incorporates a 100-µL
fixed sample loop, though you can install loops whose injection volumes vary.
Optional loops, available from Waters, handle fixed volumes from 5 to 200-µL.
Rheodyne 3725i injector – For large-scale injections, incorporates a 20-mL
fixed sample loop, though you can install loops of varying injection volumes.
Optional loops, available from Waters, handle fixed volumes from 2 to 20 mL.
Purge valve – Lets you divert pump output to waste (e.g., when purging the
system) or through the injector, columns, etc.
Scale switching valve – Lets you choose large- or small-scale tubing
systems. In the small-scale system, the injector is in a flow path plumbed with
0.009-inch ID tubing. In the large-scale system, solvent flows from the pump
to the large-scale injector through 0.040-inch ID tubing.
Inlet and outlet ports – Accepts pump outflow. The inlet port receives
solvent for both small- and large-scale flow paths, which flow to separate
outlet ports. The flow from these outlets goes to the detector flow cell.
Purge outlet port – Flow goes from the inlet port to this outlet port when
you set the purge valve to Purge.
Waters Prep series modules
This section addresses these Prep Series major modules:
• Fluid handling unit
• PrepLC controller
• Rheodyne 3725i injector (PrepLC and Delta-Prep systems)
• Rheodyne 7725i injector (Delta-Prep system only; optional for PrepLC
system)
• Column rack (Delta-Prep system only)
• Injector panel (PrepLC system only)
Fluid handling unit
The figure below shows the internal workings of the fluid handling unit, which
delivers solvents from their reservoirs to the injector.