Gemini VIII 2390
Micromeritics’ Gemini VII 2390 Series of surface area analyzers rapidly and reliably produce accurate and repeatable surface area and porosity results. Their low cost, speed, simplicity of use, reliability, and ruggedness have earned the Gemini a place in laboratories worldwide as an essential tool in research and quality control environments. The secret of Gemini’s unique capabilities lies in the innovative use of sample and balance tubes. These tubes are identical in every aspect, including their thermal environment. The sample and reference reservoirs, like their associated tubes, are physically identical and are initially charged to the same pressure. During an analysis, differential pressure between reservoirs is monitored.
- The patented twin-tube design negates free-space errors introduced by thermal gradient variations or by initial mis-measurement of free space
- Permits low surface area measurements without requiring krypton by essentially eliminating free-space error, the limiting factor in typical static volumetric systems
- Accelerates delivery of the analysis gas because sample uptake controls the rate at which the gas is delivered to the sample. This results in a surface area analyzer that is as fast as the physics of adsorption allows
- The use of a servo valve to control the rate of gas flow into the sample tube assures accurate attainment of target pressures without pressure overshoot