Dexsil

Field Testing: Quantitative PCB/Chlorinated Organics Testing for Dielectric Fluid, Soil, Water, and Surface Samples

On-Site Testing for PCB and Other Chlorinated Hydrocarbons

U.S. EPA SW-846 Method 9078 for Soil

The L2000DX relies on the same basic chemistry as the Clor-N-Oil test kits, however instead of a colorimetric reaction, the L2000DX uses an ion specific electrode to quantify the contamination in the sample. Sample analysis is available for transformer oils, soils, water and surface wipes. The usable measurement range for oils and soils is 2 to 2000 ppm, 20 ppb to 2000 ppm for water and 2 to 2000 ug/100 cm2 for wipe samples.

The large LCD (2 lines x 16 characters) back-lit display is easy to read in all lighting situations. Pertinent information regarding the program in use, blank subtraction values, reporting units, and concentration values are clearly visible on the display.

The L2000DX Analyzer is preprogrammed with conversion factors for all major Aroclors and most chlorinated pesticides and solvents. The built-in methods include corrections for extraction efficiencies, dilution factors and blank contributions. Precanned programs are easily selected from a menu to perform routine analysis of common chlorinated organic compounds. For less common analytes or for custom measurement protocols, user defined methods can be easily built and stored using the method development menus.

Analysis results can either be stored for later print-out, using the parallel port or up-loading to a PC via the RS-232 serial port, or sent directly to the on-board 40 column thermal printer. The analyzer itself utilizes rechargeable batteries which allow fully mobile operation in remote locations without access to power.

TRAINING
The L2000DX can be used in the field or laboratory by non-technical personnel. The only required training is a review of the step-by-step instructions that are supplied with the instrument.

TIME
An oil sample requires about five minutes to run while water, soil and surface tests take about ten minutes each. This eliminates the need to wait days or even weeks for laboratory results. Crews working at a site can take immediate action to secure equipment, isolate a site, or remove contaminated soil.

HOW TO USE THE L2000DX
Instrument calibration is required at the beginning of each day (takes about 2 minutes). After calibrating, a reagent blank is tested to ensure the analysis is being run properly and to provide a baseline for accurate low-level results. Blank subtraction can be incorporated into the method and is automatically updated upon calibration. The preparation steps involve extracting the chlorinated organics from the soil, water or wipe material,(not required for PCB in transformer oil), and reacting the sample with a sodium reagent to transform the chlorinated organics into chloride. The resulting chloride is quantified by the L2000DX Analyzer. Several samples can be prepared concurrently, then analyzed in less than a minute per sample. Samples can be prepared and analyzed at a later time. One operator can complete about 65 oil tests, or 45 soil or surface wipe tests in an eight hour day.