VOC-Mole is a stainless steel assembly that is inserted into the ground, allowing soil gas to be sampled onto a sorbent tube, for analysis using thermal desorption (TD). VOC-Mole is constructed from stainless steel drilled with a series of holes through which soil gases can pass. The probe has a tapered tip, which allows it to be driven into the ground using the dedicated impact former.
Three probe lengths are available for sampling volatiles at different depths:
Versatile sampling options
VOC-Mole uses an aluminium sampling cap to prevent the ingress of water, wildlife and general soil debris, and is easily adapted to two sampling modes:
Alternatively, the tube and pump can be placed entirely outside the VOC-Mole body. Tube and sampling cap assemblies can be prepared in the laboratory and sealed ready for transport to the field (where the probes may already be in situ).
VOC-Mole has a number of applications, ranging from mapping of contaminated land prior to remediation to forensic investigations and chemical ecology studies of soil microorganisms.
As well as GC analysis of tubes, hand-held PID or FID detectors can be used with VOC-Mole for quick screening of vapour levels.
Soil moisture sensor SM150, measuring range 0...70% volume soil moisture. Accuracy +/- 3%. Measuring range temperature 0...-60 °C, accuracy 0.5 °C. With 2 measuring pins, length 51 mm. Output signal 0-1 Vdc. M12 connection, exclusive cable. Warranty 5 years.
EC-probe for soil salinity measurements, standard set for measurements to 1 m depth. Technical Specification Maximum measuring depth: < 100 cmMeasured parameters: conductivity, temperatureMeasuring accuracy: 0.05 mS/cmMeasuring principles: direct electrical (bulk soil) conductivity + temp.Measuring range
The Thetaprobe is also available in the form of a profile probe for use in thin-walled tubes that are installed in the soil. The profile probe is fitted with 6 measuring elements with a measuring range of 100 cm so that the soil moisture content can be measured at different depths within a vertical soil profile. The probe measures with an accuracy of ± 3% in a thin-walled tube and has a measuring volume of ± 1.5 litres at each profile depth. The profile probe can be used as a
Soil moisture sensors that measure the moisture tension in the soil are read out with the soil moisture meter Watermark. The measuring principle is similar to that of the gypsum block system. The special sensors however do not dissolve in the soil and have a more consistent distribution of pores so that more accurate measurements are possible. Benefits Soil Moisture Measur