Specifications include, but are not limited to: : The Vermont Department of Health Lab (VDHL) is seeking a purge and trap concentrator with autosampler to support method EPA 524.2, measurement of volatile organic compounds in drinking water. The VDHL is seeking quotes through the RFP processes for an instrument that can meet the following requirements: Functional Requirements for Purge and Trap Concentrator • Interface with Agilent 5977 GC-MS • Compatible with US EPA methods 524.2 and 524.4 • USB interface with instrument computer • Electronic mass flow controller for use with either helium or nitrogen • Ability to vary flow rates from 5 mL/min to 100 mL/min. • Automated leak check and over-pressure sensing capability • Column size 0.18 to 0.75 mm ID • Foam detection and prevention functions • Software control via computer • Built-in diagnostics and self-testing • Cycle time: 15 minutes or less • Trap furnace temperatures from ambient to 350 °C • Transfer line heated up to 250 °C • Sample heater up to 90 C • 1 ppm maximum sample concentration • Motor-actuated 6 port valve • Valve temperature controlled to 250 °C • 5 mL and 25 mL sample loop; Functional Requirements for Autosampler • Interface with Purge and Trap Concentrator • 84 sample positions for 40 mL VOA vials • XYZ robotics with septum piercing needle. • Nitrogen and helium gas compatible • Sample cooling to 4 °C • Ease of rinsing the entire liquid sample pathway • User defined rinse volume and number of rinses for the needle and glassware • Non-reactive solenoid valve and PEEK tubing for liquid transfer • UV-protected 15 mL standard vessel • Standard vessels sealed under pressure. • Two standard injection systems, with 2-way dosing valves • Standard injection capacity of 1, 2, 5uL • Variable hot water heat control from 35 °C to 90 °C • pH probe range of 2 to 12
