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Sitelab's test method is very simple.  Using our disposable test kits, soil, sediment or groundwater samples are quickly prepared and analyzed in only a few minutes, as illustrated below:


Sample Extraction & Analysis is Fast, Easy and Quality Controlled:

1. Prepare Sample

soil samples: are weighed onto a digital scale and placed into a jar for extraction.

Water samples: are measured out and poured into a jar for extraction.

Oil on metal samples: wipe surface with gauze pad and add to jar for extraction.

2. Add Solvent

Solvent is measured out with a test tube and then added to the sample extraction jar.  Jars are shaken by hand for several minutes, giving the solvent ample time to dissolve/extract the hydrocarbons. 

Use methanol for soils and sediments.  Use hexane for crude oil in water or oil on metal.

3. Filter Extract

A syringe is used to suck up the extract, which is then passed through a specialized filter to remove particulates and potential interferences.  Once the samples have been extracted in solvent, they can be analyzed at any time.  Extracts are reusable and can be tested over and over again.

4. Dilute Extract

In order for the sample to be detected within the linear range of the calibration curve, a dilution is usually required for analysis.  Dilutions are made using a high precision pipette by diluting the extract into a second test tube and adding more solvent.

5. Test Sample

The sample is poured into a glass cuvette and  then placed into the analyzer for analysis.  After a few seconds, the sample's concentration is displayed in ppm.

 Final results are calculated by multiplying the reading by the dilution factor.

 

See our "Quick Reference Guides" for Step-by-Step Test Instructions:
 
              


The PDF files above show how soil samples are tested using methanol solvent.  Additional quick reference guides are available testing oil in water, oil on metal, surface wipe and other applications. 

 

                                 

 

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