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Gas or Vapour to be Measured Chemical Formula	Gastec Tube No. & Name		Measuring Range (ppm)	Measuring Time (hours)	Shelf Life (year)	Note	TLV-TWA,C (ACGIH) (ppm)
Acetaldehyde CH3CHO	91D	Formaldehyde	0.1-20	1-10	1*	-	C 25
	151D	Acetone	4-1200	1-10	2*	T
	152D	Methyl ethyl ketone	1.2-360	1-10	2*	T
Acetic acid CH3CO2H	81D	Acid gases	0.5-100	1-10	3	T	10
Acetic anhydride (CH3CO)2O	81D	Acetic acid	0.45-90	1-10	3	T	5
Acetone CH3COCH3	151D	Acetone	5-1500	1-10	2*	T	500
Acetone CH3COCH3	152D	Methyl ethyl ketone	1.4-420	1-10	2*	T	500
Ammonia NH3	3D	Ammonia	2.5-1000	0.5-10	3	T	25
Ammonia NH3	3DL	Ammonia	0.1-10	1-10	2	T	25
Benzene C6H6	122DL	Toluene	2.4-600	1-10	2	-	0.5
1,3-Butadiene CH2:CHCH:CH2	174D	1,3-Butadiene	1.3-200	1-8	2	-	2
Carbon dioxide CO2	2D	Carbon dioxide	0.02-16%	0.5-10	2	T	5000
Carbon monoxide CO	1D	Carbon monoxide	1.04-2000	0.5-48	2	-	25
Carbon monoxide CO	1DL	Carbon monoxide	0.4-400	0.5-24	2*	-	25
Chlorine Cl2	8D	Chlorine	0.08-100	0.5-24	2	-	0.5
Chlorine Cl2	132D	Trichloroethylene	2.4-240	1-8	1*	T	0.5
Trans-1,2-Dichloroethylene ClCH:CHCl	174D	Butadiene	3.9-600	1-8	2	T	200
Trans-1,2-Dichloroethylene ClCH:CHCl	132D	Trichloroethylene	6-600	1-8	1*	T	200
Dimethylamine (CH3)2NH	3D	Ammonia	1.9-750	0.5-10	3	T	5
N,N-Dimethylethylamine C2H5N(CH3)2	3D	Ammonia	4-1600	0.5-10	3	T	-
Ethanol C2H5OH	112D	Ethanol	100-25000	1-10	3	-	1000
Ethyl benzene C6H5C2H5	122DL	Toluene	2.8-700	1-10	2	-	100
Ethylene CH2:CH2	174D	Butadiene	1.56-240	1-8	2	-	-
Ethylene dichloride ClCH2CH2Cl	174D	Butadiene	3.9-600	1-8	2	T	10
Formaldehyde HCHO	91D	Formaldehyde	0.2-40	1-10	1*	-	C 0.3
Formic acid HCO2H	81D	Acetic acid	0.55-110	1-10	3	T	5
Furfural C5H4O2	91D	Formaldehyde	0.2-40	1-10	1*	-	2
Hydrazine N2H4	3D	Ammonia	1.6-650	0.5-10	3	T	0.01
Hydrazine N2H4	3D	Ammonia	0.05-0.1	0.05-0.1	3	T	0.01
Hydrogen chloride HCl	14D	Hydrogen chloride	1-100	1-10	3	TH	C 4.7
Hydrogen chloride HCl	132D	Trichloroethylene	1.8-180	1-8	1*	TH	C 4.7
Hydrogen cyanide HCN	12D	Hydrogen cyanide	1-200	1-10	3	H	-
Hydrogen fluoride HF	17D	Hydrogen fluoride	1-100	1-10	3	H	C 3
Hydrogen fluoride HF	14D	Hydrogen chloride	1-100	1-10	3	TH	C 3
Hydrogen peroxide H2O2	32D	Hydrogen peroxide	0.5-40	1-10	3	T	1
Hydrogen sulphide H2S	4D	Hydrogen sulphide	0.2-200	1-48	3	-	10
Isoprene CH2:C(CH3)CH:CH2	174D	1,3-Butadiene	2.6-400	1-8	2	TH	-
Methylamine CH3NH2	3DL	Ammonia	0.19-19	1-10	2	T	5
Methyl ethyl ketone CH3COC2H5	152D	Methyl ethyl ketone	2-600	1-10	2*	T	200
	91D	Formaldehyde	0.125-25	1-10	1*	-
	151D	Acetone	6.5-1950	1-10	2*	T
Methyl isobutyl ketone (CH3)2CHCH2COCH3	151D	Acetone	11.5-3450	1-10	2*	T	50
Methyl isobutyl ketone (CH3)2CHCH2COCH3	152D	Methyl ethyl ketone	4-1200	1-10	2*	T	50
Nitric acid HNO3	14D	Hydrogen chloride	0.8-80	1-10	3	T	2
Nitric acid HNO3	17D	Hydrogen chloride	0.32-32	1-10	3	TH	2
Nitrogen dioxide NO2	9D	Nitrogen dioxide	0.1-30	1-10	1*	-	3
Nitrogen dioxide NO2	9DL	Nitrogen dioxide	0.01-3.0	1-24	1*	-	3
Sulphur dioxide SO2	5D	Sulphur dioxide	10-600	1-5	2	T	2
Sulphur dioxide SO2	5DH	Sulphur dioxide	0.2-100	1-10	3	-	2
Tetrachloroethane Cl2CHCCl3	133D	Tetrachloroethylene	3-150	1-8	1*	T	25
Tetrachloroethane Cl2CHCCl3	132D	Trichloroethylene	1.5-150	1-8	1*	T	25
Toluene C6H5CH3	122DL	Toluene	2-500	1-10	2	-	50
Trichloroethylene Cl2C:CHCl	132D	Trichloroethylene	3-300	1-8	1*	T	50
Triethylamine (C2H5)3N	3D	Ammonia	5.3-2100	0.5-10	3	T	1
Trimethylamine (CH3)3N	3DL	Ammonia	0.23-23	0.5-10	2	T	5
Vinyl chloride CH2:CHCl	174D	1,3-Butadiene	1.56-240	1-8	2	T	1
Vinylidene chloride CH2:CCl2	132D	Trichloroethylene	6-600	1-8	1*	T	5
Xylene C6H4(CH3)2	122DL	Toluene	3.4-850	1-10	2	-	100


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