LV-200 pages

LV-20
STANDARDS ADDITION MODULE FOR 4551A AUTOSAMPLER

The LV-20 Standards Addition Module is an option for the
4551A Autosampler that adds internal standards or surrogate/
matrix spike standards to improve the accuracy and precision of
GC/GC-MS analyses. The LV-20 employs high speed injection valves
to minimize standard usage and decrease laboratory operating costs
for expensive standards. The LV-20 is designed to mount directly on
top of a 4551A Autosampler.

Operating Principle
Two amber-glass vial reservoirs are filled with internal stand or surrogate
standard solutions. Once mounted on the LV-20, the vials are pressurized
to 6 – 10 psi and the siphon tubing to the injection valve manifold is
primed. All LV-20 functions are programmed using the touchscreen and
WindowsTM CE software on the Eclipse 4660 Purge-and-Trap. The highspeed injection valves automatically inject the programmed volume of
standard during sample transfer from the autosampler to the sparge
vessel of the purge-and-trap.

Principal Applications
•t GC/GC-MS analysis of volatile organic
compounds (VOCs)

LV-20 Capabilities
•t Automatically adds internal standard or surrogate/ matrix spike
standards at operator-defined intervals
•t Injects programmed volume of standard with no excess or waste
•t Significantly reduces the volume of standards used in GC-MS analysis
•t Amber glass reservoirs protect standards from UV light
•t Dry erase panel for simple record keeping regarding standards in use
on the instrument

•t Drinking Water
•t Wastewater
•t Groundwater
•t Storm water
•t Volatile Petroleum Hydrocarbons (VPH)
•t Oxygenates
•t USEPA 502.1, 502.2, 503.1, 524.2, 601,
602, 603, 604, 624, 1666, 5030, 8010,
8015, 8020, 8021, 8030, 8260
•t ASTM and Standard Methods
•t VPH and GRO Methods