Surface Measurement Systems (SMS) Ltd. products

The DVS Advantage uses dry air or dry nitrogen as carrier gas. The user can select one of any two vapor sources, originating from liquid organic solvents or water held at the same temperature as the DVS. When the dry carrier gas passes through a solvent, it becomes saturated with the vapours of that solvent. Precise control of the ratio of saturated and dry gas flow is enabled with mass flow control combined with the use of unique real time vapour concentration monitoring. A known concentration of the selected vapour then flows over a sample suspended from a recording ultra-microbalance, which measures the change in weight caused by sorption or desorption of the vapour molecules. These dynamic flow conditions enable the adsorption/desorption processes to be so rapidly studied.

The DVS Intrinsic Plus is the smallest automated DVS for complex water sorption challenges from Surface Measurement Systems. The Intrinsic Plus was designed to meet the needs of the small to mid-sized laboratories and plants. It combines ease of use with a low capital investment and maintenance burden. The system incorporates the SMS Ultrabalance^TM, and industry leading electronics. The user interface combined with the step-by-step software wizards yield high performance with minimal operator training. The unit’s small footprint makes optimal use of limited bench top space.

The world’s most versatile Vacuum DVS for the measurement of kinetics and physisorption isotherms of Zeolites, MOFs, COFs, Carbons, and composite materials.

DVS Adventure is a water vapor sorption analyzer that measures sorption and desorption isotherms over a broad range of humidities and temperatures. It offers unprecedented temperature stability and humidity performance. It provides valuable information about the interactions of a sample with water vapor that is critical for the development of new materials and processes. For example, in many industries water sorption properties of raw materials are considered as key parameters in determining their storage, stability, processing and application performance.

The Vapor Pressure Analyzer or VPA measures the vapor pressures of solids, liquids and oils using the Knudsen effusion method. The vapor pressure is an important material physical property that defines the amount of vapor phase material that exists in equilibrium with the original material. All materials enter the vapor phase by sublimation (solid – gas) or evaporation (liquid – gas). The vapor pressure of a material at thermodynamic equilibrium is a fundamental property of the material and is only a function of temperature.

The iGC-SEA continues Surface Measurement Systems’ pioneering history with inverse gas chromatography (iGC), which now spans more than fifteen years. The iGC-SEA is a second generation iGC instrument. It is the world’s only commercial instrument based on the iGC principle. The unique SMS injection scheme provides a wide range of injection concentrations with unrivalled accuracy and reproducibility.