• Sample Loop – The AQUATek LVA is equipped with a fixed volume PEEK™ sample loop with volume choices of 5, 10, 20 and 25 mL. The sample loop is filled with a liquid sample from the sample vial via a pressurization step. The loop is connected to two 3-port solenoid valves. These valves allow for the sample volume to be swept to the concentrator for analysis and allow for cleanup of the loop between samples via hot water rinsing and an inert gas sweep.​
  • 84-Position Sample Tray – The 84-position sample tray loads quickly and is fully insulated, ensuring that chilled samples remain cool.​
  • Vial Chiller Tray – The vial chiller allows for sample cooling. The chiller requires the use of an external recirculating cooling bath (optional accessory) for operation.​ 
  • Valve Manifold – A precision-machined manifold reduces plumbing connections by 60% over previous designs and results in improved system reliability.  
  • Hot Water Rinsing – The entire liquid pathway can be rinsed using the high temperature Deionized (DI) water cleaning technique which uses two internal reservoirs to heat blank water to 90 °C for rinsing.​
  • XYZ Automation – The quick, whisper-quiet arm has undergone years of refinement and testing to eliminate the issues typically associated with older XYZ autosampler platforms.​
  • Stackable Configuration – Stackable configuration minimizes the instrument footprint and saves lab bench space.​
  • Internal Standards – ​Internal standards/surrogates are stored in two 15 mL amber glass vessels to prevent transmission of UV radiation. Vessels are sealed with a PEEK™ cap to prevent adsorption and contamination of the standard solution.  Each standard vessel can deliver volumes of 1, 2, 5, 10, or 20 μL to each sample. Each standard injection valve can be used independently or in combination.​
  • Barcode – The AQUATek LVA has the ability to connect to a standard barcode reader in order to scan vial barcodes and automatically have the vial ID number added into the TekLink™ schedule.​
  • Blanking Water Reservoir – Reservoir included with system provides cleanup water and auto-blanking, which frees up vial space in the sample tray for increased throughput.​​

Methods

  • USEPA 5030 in conjunction with 502.1, 502.2, 524.2​, 524.3, 524.4, 503.1, 601, 602, 603, 624, 8010, 8015, 8020, 8021, 8030, 8240, and 8260​
  • ASTM and Standard Methods
  • Massachusetts VPH and GRO Methods​​​
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​Automation
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​Sample Types
​Liquid samples, including drinking water and wastewater; Liquid samples containing up to 15 mm of sediment when me​​asured from the bottom of an upright 40 mL vial
​Sample Vials
​84-positions for 40 mL VOA vials, single hole cap with PTFE-faced silicone septum, per USEPA specifications
​Automation​
​XYZ robotics with septum piercing needle 
​General Specifications​​
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​Dimensions (H x W x D)
​25.3” x 21.6”x 26.3” (64.2 cm x 54.8 cm x 66.8 cm) 
​Weight
​Unit weight: 70 lbs (31.75 kg)
​Power Requirements
​100-240VAC +/- 10%, 50/60 Hz, 2.5A, 300W
​Environmental Specifications
​Operating Temperature: 10° to 30 °C; Storage Temperature: - 20° to 60 °C; Relative Humidity: 10% to 90% ; the front cover and autosampler is corrosion resistant to waters with a pH range of 1 to 10
​Gas Handling​
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​Sample Pathway
​1/16” and 1/8” O.D. PEEK tubing; 1/8” PTFE Tubing
​Gas Supply
​Ultra-high Purity (99.999%) pure Helium or Nitrogen; Incoming Pressure: 60-100 psi, (100 psi max)
​Liquid Handling​​
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​Sample Precision
​< 1% RSD (n=7 @ 5 mL delivery volume measured by weight)
​Sample Pathway
​Glass, PEEK, EPDM and Ultem® for solenoid valve manifold. 1/16” (0.16 cm) OD PEEK tubing for liquid transfer
​Water Supply
Requires use of a pressurized blank water reservoir (included)​
​Cleaning
​The entire liquid sample pathway can be rinsed using the high-temperature DI water rinse cleaning technique; user defined rinse volume and number of rinses for the needle and glassware
​Blanks
​Automatic blanks can be pulled from the blank water reservoir and spiked with standard/ surrogate allowing all autosampler positions to be used for samples
​Vial Cooling
​Cools sample tray to 4 °C or less as defined by most USEPA Methodologies (requires an external recirculating cooling bath)
​Standard Injection​
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​Standard Injection System
​Two standard injection systems utilizing 2-way dosing valves mounted on the valve manifold
​Capacity
​Up to 20 μL in 1, 2, 5, 10 and 20 μL increments at 1 µL per 1 µL injection
​Precision and Accuracy
​< 10% RSD measured by GC/MS for Fluorobenzene and Bromofluorobenzene, (n=7), based on 5 µL injection volume
​Standard Vessels
​Two 15 mL standard vessels, UV-protected for added standard stability; Standard vessels sealed under pressure for standard concentration integrity
​Heater​
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​Water Heater
​Variable Heat Control from 40 °C to 90 °C.
Ser​vice
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​Electronic Leak Check​
​Ability to leak check the sample pathway of the system via an automated system leak check process.
​Benchmark Test
​The system has a mode that will allow for full electromechanical testing including; valving, heater, liquid delivery system, inputs and outputs 
​Diagnostics
​The system offers independent control of all valves and liquid handling mechanisms for troubleshooting​
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