ASTM's catalyst standards are instrumental in the testing and chemical analysis of the various forms of catalysts and catalyst carriers used to increase the rate of specific chemical reactions. The test methods and techniques presented in these catalyst standards include hydrofluoric/sulfuric acid decomposition, atomic spectroscopic analysis, potentiometric titration method, microactivity test, volumetric vacuum method, static volumetric measurements, mercury intrusion porosimetry, electronic counting, laser light scattering, nitrogen adsorption by continuous flow method, ammonia chemisorption, X-ray powder diffraction (XRD), X-ray fluorescence spectrometry (XRF), and elemental analysis by inductively coupled plasma atomic emission spectroscopy. These standards are helpful in allowing laboratories and other chemical facilities to examine and assess catalysts to ensure their safe handling and use.