AS202 Gas Auto-sampler
Stand-alone unit allows for unattended analysis of up to twelve gas cylinders with increased accuracy and precision.
Features
Applications
Performance
Models
Specifications
Need
Problem:
Labor is needed to swap between unknown samples between subsequent runs of unknown samples.
Solution:
The AS202 Gas Autosampler allows for high throughput analysis of unknowns without the need for hourly attention from technicians. The oven accommodates up to twelve 500 mL or nine 1-liter sample cylinders. This capacity decreases end user's need for personnel performing repetitive time consuming tasks which saves time and money.
Problem:
Cold spots in sample introduction lines between the sample cylinder and gas chromatograph greatly affects analyte relative standard deviation (% RSD).
Solution:
The AS202 Gas Autosampler is equipped with a heated transfer line to eliminate sample condensation. This provides faster, more precise, more accurate, and more consistent sample introduction and therefore, more accurate analyte quantitation of unknown samples. Process modifications made on erroneous quantitation of analytes are costly mistakes.
Problem:
Quantitation of analytes in unknown samples due to carry over between samples leads to erroneous decision making.
Solution:
Wasson-ECE AS202 software sample acquisition parameters can be customized to eliminate carryover between unknown samples through programmable purge cycles and vacuum pump operation.
Differentiation
Heated primary oven housing 12 unknown samples
Temperature controlled up to 135°C for optimal sample conditioning and vapor pressure management.
Heated transfer line to GC to prevent sample condensation
Maintains sample integrity from cylinder to injection point.
Customizable sample acquisition and automation
Flexible software control allows for custom sampling sequences, purge times, and analysis protocols.
Universal GC compatibility
Works with any GC configured with a gas sampling valve, not limited to specific manufacturers.
Qualification
Wasson-ECE has four decades of gas chromatography experience offering our customers turn-key solutions for their lab and process floors. The AS202 gas auto-sampler was our first product and has increased the productivity and capability of our GC lab and our customers' laboratories worldwide.
Topline Specifications
- Accommodates up to twelve 500 mL or nine 1-liter cylinders
- Vacuum pump/gas purge to minimize cross-contamination
- Compatible with Agilent 6890, 7890, and 8890 GCs
- Compatible with OpenLAB ChemStation software in stand-alone mode
- Compatible with alternative chromatography data systems in stand-alone mode
- PC-based control software with intuitive interface
- Maximum oven temperature: 135°C
- Heated transfer line to GC: 135°C
- Maximum sample pressure: 1000 psig (dependent on valve configuration)
- Optional: Specially passivated tubing for reactive components
Need
Problem:
Labor is needed to swap between unknown samples between subsequent runs of unknown samples.
Solution:
The AS202 Gas Autosampler allows for high throughput analysis of unknowns without the need for hourly attention from technicians. The oven accommodates up to twelve 500 mL or nine 1-liter sample cylinders. This capacity decreases end user's need for personnel performing repetitive time consuming tasks which saves time and money.
Problem:
Cold spots in sample introduction lines between the sample cylinder and gas chromatograph greatly affects analyte relative standard deviation (% RSD).
Solution:
The AS202 Gas Autosampler is equipped with a heated transfer line to eliminate sample condensation. This provides faster, more precise, more accurate, and more consistent sample introduction and therefore, more accurate analyte quantitation of unknown samples. Process modifications made on erroneous quantitation of analytes are costly mistakes.
Problem:
Quantitation of analytes in unknown samples due to carry over between samples leads to erroneous decision making.
Solution:
Wasson-ECE AS202 software sample acquisition parameters can be customized to eliminate carryover between unknown samples through programmable purge cycles and vacuum pump operation.
Differentiation
Heated primary oven housing 12 unknown samples
Temperature controlled up to 135°C for optimal sample conditioning and vapor pressure management.
Heated transfer line to GC to prevent sample condensation
Maintains sample integrity from cylinder to injection point.
Customizable sample acquisition and automation
Flexible software control allows for custom sampling sequences, purge times, and analysis protocols.
Universal GC compatibility
Works with any GC configured with a gas sampling valve, not limited to specific manufacturers.
Qualification
Wasson-ECE has four decades of gas chromatography experience offering our customers turn-key solutions for their lab and process floors. The AS202 gas auto-sampler was our first product and has increased the productivity and capability of our GC lab and our customers' laboratories worldwide.
Topline Specifications
- Accommodates up to twelve 500 mL or nine 1-liter cylinders
- Vacuum pump/gas purge to minimize cross-contamination
- Compatible with Agilent 6890, 7890, and 8890 GCs
- Compatible with OpenLAB ChemStation software in stand-alone mode
- Compatible with alternative chromatography data systems in stand-alone mode
- PC-based control software with intuitive interface
- Maximum oven temperature: 135°C
- Heated transfer line to GC: 135°C
- Maximum sample pressure: 1000 psig (dependent on valve configuration)
- Optional: Specially passivated tubing for reactive components
Natural Gas Analysis
Automated compositional analysis of natural gas samples for BTU content, moisture, and impurities in pipeline quality control applications.
Petrochemical Quality Control
High-throughput analysis of refinery gas streams, LPG products, and petrochemical feedstocks for composition verification and contamination monitoring.
Environmental Monitoring
Automated analysis of air samples, soil gas, and groundwater headspace for volatile organic compounds (VOCs) and hazardous air pollutants in environmental compliance monitoring.
Research & Development
Process development and catalyst evaluation studies requiring repeated analysis of gas-phase reaction products under controlled conditions.
Precision Improvement
Independent studies show >50% improvement in analytical precision (RSD) compared to manual sampling due to elimination of human variability and consistent sample introduction conditions.
Throughput Enhancement
Capable of analyzing 12 samples unattended over 8-12 hours, representing a 3-4x increase in daily sample throughput compared to manual operations.
Cross-contamination Reduction
Programmable purge cycles and heated transfer lines reduce sample carryover to <0.1% for most analytes, meeting stringent analytical requirements.
Cost Savings
Typical ROI achieved within 12-18 months through reduced labor costs and increased laboratory productivity.
Accuracy and Precision
The Gas Auto-sampler ensures that sample analysis is not only faster, but also more precise, accurate, and consistent. In Table 1 below, you can compare the GC analysis results for 2 mL samples of n-pentane and n-hexane at 100 psi in propane. In the first run, the sample is sent to the GC from the auto-sampler at ambient temperature; in the second run the auto-sampler heats the samples to 130°C before injection.
The results show a 240% increase in n-hexane and a 72% increase in n-pentane when the gas sample is heated using the Gas Auto-sampler.
AS202 Standard Configuration
- 12 × 500mL cylinder capacity
- Standard heated oven (up to 135°C)
- Basic software package
- Standard transfer line materials
AS202 High-Capacity Configuration
- 9 × 1L cylinder capacity
- Extended heating capability
- Advanced software with method development tools
- Enhanced transfer line for reactive compounds
Custom Configurations Available
- Special materials for corrosive samples
- Extended temperature ranges
- Custom cylinder sizes and configurations
- Integration with specific GC models and data systems
Specifications
- Sample Capacity: 12 × 500mL or 9 × 1L sample cylinders
- Temperature Range: Ambient to 135°C
- Temperature Stability: ±2°C
- Pressure Rating: Up to 1000 psig
- Transfer Line Heating: Up to 135°C
- Purge Gas: Nitrogen or Helium compatible
- Vacuum System: Integrated vacuum pump for sample line evacuation
- Control System: PC-based Windows software
- Communication: RS-232/USB interface
- Standards Compliance: ASTM D1945, ASTM D1946, ISO 6974 compatible
- Safety Features: Over-temperature protection, pressure relief, emergency stop
Physical Specifications
- Dimensions: 24" W × 18" D × 20" H (61 × 46 × 51 cm)
- Weight: Approximately 34 kg. (75 lbs.)
- Construction: Stainless steel wetted parts, aluminum housing
- Finish: Powder-coated aluminum exterior
- Door: Insulated access door with viewing window
- Mounting: Benchtop installation
Infrastructure Requirements
- Electrical: 115/230 VAC, 50/60 Hz, 15A maximum
- Compressed Air: Not required
- Purge Gas: Nitrogen or Helium, 99.9% purity minimum, 30-100 psig
- Ventilation: Standard laboratory ventilation adequate
- Computer: Windows 10/11 compatible PC with USB port
- GC Interface: 1/8" or 1/4" tubing connection to GC sampling valve
- Installation Space: Minimum 30" × 24" bench space
- Environmental: 15-35°C ambient temperature, <80% relative humidity
Lab Devices Brochure
Wasson-ECE Instrumentation
101 Rome Ct., Fort Collins, Colorado USA 80524
Phone: +1 (970) 221-9179
Fax: +1 (970) 221-9364
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