Micromeritics provides a complete line of scientific instruments and laboratory equipment targeted exclusively for areas of application and research involving particle science and particle technology, including the expanding area of nanoscience. Particle size analyzers employ laser diffraction, dynamic light scattering, sedimentation, electrozone sensing, and particle imaging for shape and size analysis. Physical adsorption and mercury porosimetry instruments determine surface area and porosity. Material density can be determined by gas pycnometry and solids displacement. Chemical adsorption techniques are used to determine the active area of catalysts, metal dispersion, and surface energy. Temperature-programmed chemisorption (TPD, TPR, TPO) techniques are utilized in the chemisorption product line.