Model 709AL Positive Displacement Autosampler

The Alcott Model 709AL Positive Displacement Autosampler is an automatic sampling and fixed volume injection system. The 709AL requires no accessory gases or syringes and, while using Alcotts' patented FilterCap^TM, will automatically filter your sample "In-The-Vial". The 709AL can be equipped with or without an injection valve to allow for optimum configuration for existing or newly designed systems.

OPERATION

The benefits of the Positive Displacement technique are many, including viscosity independence in sample transfer from vial to valve's loop, the highest injection precision possible and simplicity of operation. The technique, as demonstrated below, is such that a uniquely designed cap is pressed into an Alcott Certified^TM8mm vial which contains sample. Sample is then transferred to the injection valve by the piston action of the hollow autosampler needle which first penetrates the vial cap, then uses the cap to displace the vial's contents.

BENEFITS

128 position sample vial tray
Integrated high speed injection valve
Selectable needle depth (4 positions)
"On-the-fly" programming and editing of methods
System interface through RS-232, IEEE, Contact Closures and BCD connectors
Automatically filters sample "In-The-Vial"
Simple to use and maintain
Thermoelectric refrigeration option controls sample temperature from 4° C to 40° C
Customized software features available

709AL Specifications

Standard

Design Type: Fixed loop, XYZ movement, Positive Displacement
Tray Capacities: 128 (8mm) sample vials
Injections Range: 0.06µL to 200µL
Injections Per Vial: Up to 4 with loop size < 10µL
Precision: Less than or equal to ±0.3% RSD, ACI test conditions
Carryover: Less than 0.25% without rinse Less than 0.004% with rinse, under ACI test conditions
Keypad: 20 key, 4 line, 80 character LCD
Valve: Valco Cheminert C3 valve with 10µL loop and high speed actuator
Programming: 10 Methods, maximum 128 steps per method. Priority sampling
Communications: Interfaces: RS-232-C, IEEE, I2C
Outputs: BCD, parallel printer port, inject market, 4 user selectable NO or NC Contact Closures with user selectable closure duration times.
Dimensions: 33 cm H x 32 cm W x 55 cm D (13" x 13" x 21")
Weight: 14 Kg (31 lbs.)
Weight: 17 Kg (38 lbs.) Refrigerated
Wetted Materials: Teflon, 316 stainless steel and nitronic 60
Voltage: Autoselectable: 100-240 VAC ±10%, 47-63 Hz

Options

Valves: C2, C4 or CI4W internal loop and C6 external loop Valves available
Refrigeration: 4° C to 40° C within ±1° C accuracy using Peltier cooling of entire tray surface
FilterCaps: 5.0 µm, 0.45 µm and 0.2 µm polypropylene filter membranes available
Materials: Biocompatible materials available
Other: Valveless models available for FIA and other direct injection applications

Product Part Number

709/00000/01 Standard Model 709AL with Cheminert C3 Valve with Fixed 10ul loop

709/00000/01R Refrigerated Model 709AL with C3 Valve with Fixed 10ul loop

708/25921/00 Optional UV Cover (recommended to be purchased with autosampler)