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| Overview | Specifications | Ordering Information | Print Version | Documentation |
The K-1800 HPLC pump designed for use in preparative chromatography. The standard pump is supplied with the pumphead of your choice.
Four Pumpheads
Four interchangeable pump heads are available offering maximum flowrates between 100 and 1000 ml/min. Built-in back-flushing capability gives greatly improved reliabilty for unattended operation.
Designed for Reliability
The K-1800 HPLC pump design ensures minimum downtime and constant precise flow rates for semi-preparative and preparative HPLC and for SMB systems.
Gradient Capability
The standard K-1800 HPLC pump contains all logic control needed for reliable and reproducible gradient operation without the need for an external PC. Multiple pumps can be used to form a high pressure gradient system for up to four solvents. A low pressure gradient system option for up to four solvents is also available.
Solvent Recycling
Adding an electric switching valve permits the use of solvent recycling or fraction collection features.
Easily Integrated into Systems
The K-1800 HPLC pump is of modular design, easy-to-use and easy-to-maintain, which allows it to be integrated easily into existing systems as a module.
Thermostated Heads
Both cooling and heating options for pump heads and the necessary thermostat connections are available upon request.
| Delivery System | Double-piston pump with Al2O3-pistons and electronic residual pulsation suppression | |||
| Flow ranges (ml/min) | ||||
| Pressure | ||||
| Flow Rate Accuracy | ±2 %, measured using methanol/water 80:20 V/V, RSD < 0,1 % | |||
| Flow precision | RSD (Relative Standard Deviation) better than 0.1 % | |||
| Display | LC-Display with 2 x 24 characters | |||
| System Protection | Soft start with adjustable Pmin and Pmax | |||
| Control | Knauer Net with 2 RS-232 connectors, 8 event outputs (TTL, OC, Relays), remote connections for Start and Error (The pump can be controlled using either Knauer EuroChrom for Windows Preparative Software Version V 1.65 and higher or Geminyx CDS Software) | |||
| GLP features | Recording of run time, pump cycles, total volume, installation data, maintenance and errors | |||
| Other features | In combination with an electrical switching valve solvent-recycling and/or fraction collection is possible, 20 local control programs are available | |||
| Dimensions | 220 x 185 x 340 mm (W x H x D) | |||
| Weight | 10 kg | |||
| All specifications may be subject to change for technical reasons. | ||||
| A40209 | WellChrom Preparative HPLC Pump K-1800 with 100 ml pump head, stainless steel |
| A40201 | WellChrom Preparative HPLC Pump K-1800 with 250 ml pump head, stainless steel |
| A40205 | WellChrom Preparative HPLC Pump K-1800 with 500 ml pump head, stainless steel |
| A40202 | WellChrom Preparative HPLC Pump K-1800 with 1000 ml pump head, stainless steel |
| A4099 | Valves for low pressure gradient for K-1800, stainless steel |
| A4029 | 100 ml pump head, stainless steel |
| A4021 | 250 ml pump head, stainless steel |
| A4038 | 500 ml pump head, stainless steel |
| A4022 | 1000 ml pump head, stainless steel |
| A2034 | Cooling device for pump heads A4029, A4021, A4022 |
| A0895 | RS232 cable for serial PC-interface |
| Accessories and Spare Parts, 100 ml Pump Heads | |
| A0684 | Check valve unit |
| A0747 | Piston rod, 1/4" |
| A0746 | 2 piston seals and 1 O-ring |
| A2003 | Hydraulic connection set (10 tube fitting screws, 10 tube ferrules) |
| A1121 | Option for peak recycling and SMB applications |
| Accessories and Spare Parts, 250 ml Pump Heads | |
| A1080 | Check valve unit |
| A1017 | Piston rod, 3/8" |
| A1046 | 2 piston seals and 1 O-ring |
| A2003 | Set of hydraulic connection (10 tube fitting screws, 10 tube ferrules) |
| A1117 | Option for peak recycling and SMB applications |
| Accessories and Spare Parts, 500 ml Pump Heads | |
| A1080 | Check valve unit |
| A1478 | Piston rod, 9/16" |
| A1479 | 2 piston seals and 1 O-ring |
| Accessories and Spare Parts, 1000 ml pump heads | |
| A1080 | Check valve unit |
| A1015 | Piston rod, 3/4" |
| A1077 | 2 piston seals and 1 O-ring |