The SRI Thermal Desorber accessory permits volatile and semi-volatile compounds in soil or other solid matrixes to be injected with little or no sample preparation, and with very high sensitivity. Up to one gram of soil is loaded into a reuseable glass tube, and secured in place with plugs of glass wool. The tube is then inserted into the hot ( 275°C ) thermal desorber fitting which is mounted in the heated valve oven compartment just to the left of the main column oven on the 8610C GC. Because of the large sample size ( up to 1 gram ) an analyte present in the soil at 1ppm desorbs 1000 nanograms onto the GC column. This results in very low detection limits in the ppb range for most compounds.

The SRI Thermal Soil Desorber is mounted on the left side of the GC for easy user access and allows for the deposition of all thermally desorbed compounds onto the column. Detection limits up to 10ppb are possible due to SRI's advanced ceramic ignitor which can be run continuously, preventing the FID from extinguishing itself from large volumes of water. The desorber temperature is adjustable from ambient to 400^oC.

#SRI-8690-1087

$100.00