Highly Accurate and Versatile Mercury Analysis Made Simple

The VM-3000 Mercury Vapour Monitor, from Mercury Instruments (Germany), performs continuous measurement of mercury concentration in gases. It is used in the laboratory or can be installed in locations where mercury has to be monitored. Industry people use the VM-3000 in industrial applications as well as university researchers or safety officers and personnel. It is the perfect tool for many different applications: work place monitoring, exhaust air monitoring, emissions monitoring in the chemical industry, ground air screening of contaminated areas, quality control of hydrogen and other gases and as a detector for laboratory applications.

The sample gas is fed into an optical cell by a maintenance-free membrane pump. A beam of UV light passes through the optical cell, a part of it is absorbed by the mercury atoms present in the sample. This method is called "atomic absorption spectroscopy" (AAS). It is extremely selective and sensitive. For mercury determination the AAS method is still ideal despite other, more contemporary methods being made available to the mercury analysis market. The VM-3000 is low in interference and does not require an amalgamation step or expensive carrier gases.

The VM-3000 uses a high-frequency driven electrode-less low pressure mercury lamp as its UV source. This lamp emits lines of an extremely narrow bandwidth which are congruent with the absorption lines of the Hg atoms. Cross-sensitivities are thus minimised. The extremely high stability of the UV source in the VM 3000 is a result of the reference beam feedback control method. Total background noise is less than 0.1 µg/m³

As with all of Mercury Instruments’ range of analysers - the use of advanced technology ensures that the VM-3000 meets the highest quality standards. Their range of instruments which includes stack emission monitors, ambient air monitors and laboratory mercury analysers comply with applicable national, European and American standards and/or regulations. These analysers are supported by a world class and worldwide network of sales and service agencies.