| GENERAL CHARACTERISTICS ITEM DESCRIPTION | REEL OF CHEMICALLY TREATED PAPER TAPE IN PLASTIC CONTAINER; STANDARD SIZE; HYDROZENE; CHEMICAL REAGENT SYSTEM THAT ACTS AS BOTH A TRAPPING AND ANALYSIS MEDIUM, DETECTING AND MEASURING PPB AND PPM AMOUNTS OF NITROGEN DIOZIDE; TAPE IS FED THROUGH OPTICAL HEAD OF GAS TETECTOR; DETECTOR HAS VACUUM PUMP WHICH DRAWS IN SAMPLES AND FILTERS THROUGH CASSETTE |