Multi-Channel Column Washing System
Multi-Channel Column Washing System is a standalone column washer that does not occupy the HPLC. A six-position, seven-port electric valve switches among up to six columns. The dual-piston pump delivers 0.001–9.999 mL/min at up to 42 MPa, and a 7.0-inch touchscreen runs stored wash methods.
Washes columns without tying up the HPLC
The washer is a separate unit. A wash does not require the analytical or preparative HPLC to be taken offline.
A stored method pumps the chosen wash solvent through the column and removes material adsorbed on the packing. The aim is to keep separation behavior and extend the time a column stays in service.
The set is the main unit, the switching valve and a column rack. Solvent lines are offered as 1, 2 or 4 paths. The pump head is 316L stainless steel by default; other materials can be specified.
Functions
Specification
| Flow | 10 ml |
| Delivery system | Dual pistons in series mode |
| Flow range | 0.001–9.999 ml/min, increment 0.001 ml/min |
| Flow accuracy | ±0.5% |
| Flow precision | RSD ≤ 0.3% |
| Maximum pressure | 42 MPa |
| Solvent paths | 1, 2 and 4 paths, optional |
| Pump-head material | 316L stainless steel by default; other materials optional |
| Pump-head outlet | 1/16″ O.D. tubing connection |
| Pump-head inlet | 1/8″ O.D. tubing connection |
| Column switching valve | Six-position, seven-port electric valve |
| Column capacity | Up to 6 columns |
| Valve-head material | 316L stainless steel |
| Valve-head tubing | 1/16″ O.D. standard tubing |
| Display | 7.0-inch touchscreen, 1024×600 high resolution |
| Control | All operations are controlled from the touchscreen |
| Safety | Low-solvent alarm, over-pressure alarm |
| Power | 100–240 VAC, 50/60 Hz |
| Outline dimensions | 370×285×264 mm (L × W × H) |
How a wash is set up
- Connect the columnsAttach each column to a valve position. Up to six columns.
- Connect the solventUse the purchased line count: 1, 2 or 4. Outlet tubing from the pump head is 1/16 in. O.D.; the inlet is 1/8 in. O.D.
- Choose a methodOn the touchscreen, select or edit flow, time, solvent and column position. Methods can be stored.
- RunThe instrument switches column position and solvent according to the method. A run time can be set.
- AlarmsThe unit alarms when solvent is low or pressure exceeds the limit. The stated pressure limit is 42 MPa.
Ordering
There is no public catalog number. When you enquire, please give column dimensions and how many columns, the wash solvents, whether you need 1, 2 or 4 solvent lines, and whether the pump head should be something other than 316L. Tel. 400-0810-128 (China).