Draeger-CMS Emergency Response Kit automatically measures hazardous gases that may be present in any emergency. The CMS unit uses detector tube technology inside a small credit card-sized chip and takes a precise air sample of the chemical being measured. The color change is calculated with a photo-optical system, eliminating any human interpretation or objectivity. Gas levels are typically analyzed in about 1-2 minutes. CMS does not require gas calibration; all measurement and calibration information is stored on a bar code on the CMS chip.