Complex sentence: The specialty kits are designed for use by hazardous material response teams in determining what gases or vapors are present through using a "stack" of colorimetric material that change color based upon the presence of an organic or inorganic gas.
Split into simpler sentences: The specialty kits are designed for use by hazardous material response teams in determining what gases or vapors are present. Through using a "stack" of colorimetric material that change color based upon the presence of an organic or inorganic gas.