A removable spiral autosampler tray holds 51 sample vials for fully-automated operation. Our optional LV-20 Standards Addition Module adds internal standards, surrogate or matrix spike standards, and reduce the volume of standards used.

Principle applications include: drinking water, wastewater, pharmaceutical, 16+ USEPA-approved methods, VPH and GRO, THMs, BTEX, Geosmin and 2-MIB.

Model 4551 Features:

• Automated VOC Analysis of up to 51 water samples
• Compact! Fits directly under the 4760 Eclipse Sample Concentrator
• Transfers water samples with light particulates (<100 µm) without clogging the system
• LV-20 Standards Addition Module (optional) automates addition of internal or surrogate standards
• Program multiple rinses and blanks for maximum sequence flexibility
• Decrease maintenance downtime and costs – no XYZ arm
• Peristaltic pump and sample loop eliminate slow syringe drives
• Fastest VOC autosampler available

You can trust the VOA Constrictor vial gripper technology to carefully handle samples, while high-speed injection valves improve the precision of standard addition, reduces the volume of standards used, and decreases laboratory operating costs.

Model 4100 Features:

• Holds 100 samples in two 50-position vial racks
• Operates with one or two Eclipse 4760 purge-and-trap instruments
• Vial cooling option keeps vials at 10 °C or less in accordance with USEPA Method 524.3
• VOA Constrictor vial gripper has built-in vial sensor
• Standard Addition Module has two 3-mL reservoirs, expendable to four 3-mL reservoirs
• High-speed injection valves in Standard Addition Module inject programmed volume with no excess or waste
• VOA View Windows®-based software offers an intuitive user interface with a real-time view of sampling progress

Consider using the LV-20 for these applications: GC and GC-MS analysis of volatile compounds (VOCs), drinking water, wastewater, groundwater, storm water, volatile petroleum hydrocarbons (VPH), oxygenates, 17+ USEPA-approved methods, ASTM and standard methods, and VPH and GRO Methods.

LV-20 Features:

• Automatically adds internal standards, surrogate, or matrix spike standards at operator-defined intervals
• Significantly reduces the volume of standards used in GC-MS analysis
• Amber glass reservoirs protect standards from UV light degradation
• Mounts directly on top of a 4551A Autosampler
• Dry erase panel for noting active standards on the instrument

The purge-and-trap technique involves multiple complex processing steps. Patented components of the 4760 Eclipse remove uncertainty, improving instrument operation, accuracy, and overall analytical performance. Use in conjunction with our Model 4100 Water/Soil Sample Processor or Model 4551A Autosampler to further increase sample throughput and lab productivity.

Model 4760 Features:

• Run more samples in less time and maximize laboratory throughput and profitability
• See system status instantly at a glance with TruColor LED indicator
• Patented Cyclone Water Management system removes >96% of water during the thermal desorb step allowing analysis of polar compounds and minimizing water transfer to the GC column
• Intuitive, simplified user-interface and Trap View software
• Heats sparger during bake to reduce carryover
• Patented technologies for foam sensing and purge abort to prevent system contamination
• Sparge Overfill Sensor (SOS) prevents overfilling of the sparge vessel and system flooding
• Patented Infra-Sparge Sample Heater ensures consistent sparge vessel temperature conditions for improved compound recoveries and %RSDs
• Direct resistance heating of the trap at >1,000 °C/min eliminates the need for a trap preheating step and decreases overall purge and trap cycle time

Using the temperature programming capability of the PM 1 and the TDS, samples can be thermally desorbed prior to pyrolysis, in order to remove interfering volatiles and get a cleaner pyrolysis GC/MS analysis. This means that more and better information can be obtained from a single sample. First a Thermal Desorption GC/MS run is performed in order to get information on residual monomers and/or solvents in the sample. Secondly, the pyrolysis GC/MS analysis is performed with best possible results.

The TDS can be converted from pyrolysis to thermal desorption analysis in just a few minutes.

The GERSTEL Pyrolysis Module (PM 1) is easily and conveniently controlled from the MAESTRO Software – stand alone or through the Agilent Technologies ChemStation software.

During conditioning in the TC 2, TD tubes are either held at a user-specified fixed temperature or undergo a specified temperature program cycle while being purged with inert gas to efficiently remove contaminants. Up to 5 Twisters will fit into an empty TDS tube, allowing up to 50 Twisters to be conditioned in one batch. Each tube has independent gas flow regulation enabling the conditioning of one to ten tubes without the need to adjust flows.

The TC 2 helpds to ensure that conditioned TD tubes and Twisters are always available providing best possible quality of analysis.

The TDS is mounted on top of a Cooled Injection System (CIS) that is used as cryotrap, focusing and concentrating the components to be determined, and then transferring them to the capillary column in split- or splitless mode without analyte discrimination or loss of analytes. With the addition of the TDS-A Autosampler, the TDS becomes a fully automated thermal desorption system capable of unattended analysis of up to 20 samples.

The TDS G On-Line version enables whole-air sampling as well as direct sampling of gas streams for continous on-line monitoring.