Page 109 - Eagle Scientific Ltd - Catalogue

ES Chromatography

The gradient box with degasser is suited for handling liquids in ECOM gradient
systems. It accommodates a container for solvent bottles, built-in high-efficiency
on-line degasser and four-way gradient valve.
Degasser unique design assures reliable operation and the highest level of
continuous performance available without the need for helium degassing. Up to
four solvent lines may be degassed simultaneously by one unit. One additional
channel is reserved for degassing of gradient valve output. The extremely low
internal volume of each Teflon AF® channel (480 µl) offers very fast equilibration
and very short startup times compared with PTFE degassing channels which have
the same degassing efficiency.
Four-way gradient valve is controlled from the pump ECP2010. Pump new
sophisticated electronics allows achieving precise low-pressure gradient, i.e. gradual
changes of mobile phase composition by mixing up to four liquids at the pump’s
entry. It is also possible to predefine the percentage of composition when using the
pump in isocratic mode. The gradient profile can be defined through the computer.
Up to 6 mobile phase reservoirs LCT 02 may be put into the box.
Technical Data
Degasser channels: 5 independent
Degassing process: Gas permeation through a fluoropolymer
membrane
Maximal flow-rate: 10ml/min.
Degassing capacity: ~2ppm at 1ml/min
Dead volume: ~480µl per channel
Number of gradient valves: 4 (A, B, C, D)
Maximum operating pressure: 1.38bar (20PSI)
Orifice: 1.6mm C26-3000 part - Gradient Box
Connecting thread: /4" - 28 flat bottom
Power supply: 100-240V 50/60Hz 20VA
The analytical/semi-preparative injection valve 1/16" with 20µl sample loop offers
the No-Flow-Interruption technology which reduces pressure spikes during position
switching to a minimum. It has a built-in position sensor for starting data acquisition
precisely at the point of injection. The stator of the valve is made of stainless steel
and features the Nitronic 60 coating on its working face which not only protects the
contact surface from wear but also improves the abrasion of the stator and rotor.
The needle port can be used with standard microliter syringes (e.g. Hamilton) or
plastic type blunt syringes (with PST3 needle point style) with 0.7mm needles. The
valve is standardly delivered with polymeric Valcon H rotor seal.
Technical Data
Maximal pressure: 34.5MPa / 345bar / 5000PSI
Control: manual
Dimensions: 35mm / 62mm diameter
Inside hole diameter: 0.4mm
Capillary connection: UNF 10 - 32 standard thread
Loop volumes: 2µl - 5ml
The ECOMAC software is designed with maximal effort to do easy operation of
chromatographic systems ECOM. It is suited for units controlling and data collecting.
Units are connected to the PC using RS232, or USB (by means of RS232/USB
converter). Software detects automatically almost all units, so there is no need
complicated communication installation. It is possible to start up to 8 stations at
the same time.
C26-3000 part - Injection Valve
Complete with 1 x column 250 x 4.6mm Chromasil 100 - 5µm, C18, chemical stability
1.5 - 9.5pH and set accessories for analytical system series 2000.

C26-3000 HPLC System

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