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Instrument Database:
ESA Inc. - Model 542 HPLC Autosampler
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| Year of introduction |
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| Status |
historical ( out of sale ) |
| Company |
ESA Inc.
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| Categories |
Automation: Autosampler (LC)
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- Quick-release bio-compatible injection valve
- Integrated column oven
- Integrated sample tray cooling (optional)
- Injection system providing zero sample loss with limited sample volumes
- Multiple injection modes: flushed loop, partial loop and microliter pick-up
- Optional sample tray formats
- Sample dilution, mixing and derivatization capabilities
The Model 542 HPLC Autosampler is optimized for use with electrochemical detection and incorporates an integrated column oven. This compact sized unit offers many features found in other more expensive autosamplers. It incorporates three selectable injection modes: full loop, partial loopfill and microliter pick-up. Sample processing capabilities are provided for sample mixing, dilution and on-line derivatization.
The integrated column oven provides temperature control up to 60° C and keeps injector to column tubing connection length to a minimum. The fluidic pathway uses biocompatible (PEEK® ) components. The quick-change injection valve simplifies change-over and minimizes down time. The standard sample tray capacity is 84 - 1.8 mL sample vials and 3 - 10 mL vial positions for wash and alternate reagents. The sample tray can be cooled (refrigerated) by the addition of optional factory installed temperature control capability.
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| Specifications |
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Sample Capacity:
Standard tray: 84 vials of 1.8 mL (Std) and 3 vials of 10 mL (LSV)
Vial Dimensions (cap included):
Maximum vial height: 47 mm,
Minimum vial height: 32 mm
Loop Volume:
I - 5000 µL (interchangeable)
Dispenser Syringe:
250 µL (Std) or 1000 µL syringe
Vial Detection:
Missing vial detected by vial sensor
Headspace Pressure:
Built-in compressor
Switching Time Injection Valve:
Electrically <100 msec
Piercing Precision Needle:
± o.6 mm
Wash Solvent:
External wash solvent bottle
Bio-compatible Valve:
PEEK' injection valve, with quick connect mounting
Wetted Parts in Flow Path:
SS316, PTFE, TEFZEL, VESPEL, Glass, Teflon, PEEK
Built-in Column Oven:
Temperature Range: ambient +5 to 60,C ± IIC
Oven Dimensions:
I" W x I" D x 11.811 L (2.5 cm x 2.5 cm x 30 cm)
Communication Port:
Serial RS232C
Output:
Injection marker, 2 Auxiliary outputs,
Alarm output (Relay & TTL)
Input: Next injection, freeze & stop (TR)
Ambient Environment: 10-40'C, 5-95% relative humidity, non-condensing
Unit Dimensions: 30 cm x 50 cm x 34 cm (11.8" H x 19.7" W x 13.4" D)
Weight: 19 kg (42 lb.), 21 kg (46 lb.) with cooling option
Power Requirements: 115/230 VAC; ± 15%; 50/60 Hz; 200 VAC
Product Certification: CE
Reproducibility: RSD < 0.3% for full loop injections
RSD < 0.5% for partial loop fill injections,
injection volumes > 10 µL
RSD < 1.0% for µL pick-up injections,
injection volumes > 10 µL
Carry-Over: < 0.05% with programmable needle wash
Methods: 9 programmable methods with priority sample mode
Injection Modes: Full loop injection, Partial loop fill injection, µL pick-up injection
Injection Volume: I µL - 5000 µL, with I µL increments
Injections per Vial: Maximum 9 injections
Analysis Time: Maximum 9 hr. 59 min. 59 sec.
Programmable Needle Wash: Wash between injections, between vials, between series
Programmable Timed Events: 4 x AUX-1 on/off, 4 x AUX-2 on/off,
Initial oven setpoint, 2 x new oven setpoint
Series: 9 programmable series
Sample Tray Cooling
Temperature Control: Integrated, Peltier type
Temperature Range/Capacity: 4-15ºC, no greater than 20º'C below ambient
Temperature Accuracy: ± 2ºC
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