Instrument Depot: GASTEC Gas Detection Tube System

	GASTEC Gas Detection System Detector Tubes

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8-Hour Diffusion Tubes

Tubes for Dissolved Substances in Solution

We've got gas detector tubes from A to X, from acetaldehyde to xylene, with a few hundred substances in between. Most tubes are in stock and ship the same day we receive your order. Gas detector tubes can analyze a wide variety of gases and vapors accurately, quickly and easily. But you need fresh tubes, so we are very, very careful with expiration dates and check every box before it goes out the door.

Select the first letter of your target compound to jump to that section, then click on the name of the substance. You'll go right to the shopping cart where you can order the number of boxes you need. Your total cost appears at checkout.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Gas/Vapor	Measuring Range (ppm unless otherwise noted)	TLV (ppm)	Part No.	10 Tubes per Box (unless otherwise noted)
Acetaldehyde	5-750	C 25	92	$66.95
Acetaldehyde	1-20	C 25	92L	$70.25
Acetaldehyde	2.5-100	C 25	92M	$66.95
Acetic Acid	1-100	10	81	$70.25
Acetic Acid	0.125-25	10	81L	$65.85
Acetone	0.02-2 Vol.%	500	151	$67.50
Acetone	50-12,000	500	151L	$66.95
Acetylene	0.05-4 Vol.%	-	171	$66.95
Acid Gases (Acetic Acid)	1-80	10	80	$66.95
Acrolein	3.3-800	C 0.1	93	$66.95
Acrylonitrile +	2-360	2	191	$66.95
Acrylonitrile +	0.1-18	2	191L	$66.95
Amines	5-100	-	180	$66.95
Amines	0.5-10	-	180L	$66.95
Ammonia	0.2-32 Vol.%	25	3H	$67.50
Ammonia	0.5-78	25	3L	$65.30
Ammonia	2.5-200	25	3LA	$65.30
Ammonia	0.05-3.52 Vol.%	25	3HM	$65.85
Ammonia	10-1,000	25	3M	$65.30
Amyl Acetate	10-200	100	147	$67.50
Aniline	1.25-60	2	181	$67.50
Aromatic Hydrocarbons	0.4-200		120	$62.00
Arsine	0.04-10	0.05	19LA	$66.95
Benzene	2.5-120	0.5	121	$65.30
Benzene +	0.5-10	0.5	121SP	$64.20
Benzene in Aromatics +	0.5-100	0.5	121SL	$65.30
Benzene +	0.125-60	0.5	121L	$65.30
Benzene Low Aromatics +	2-312	0.5	121S	$65.85
Butadiene	50-800	2	174	$67.50
Butadiene	2.5-100	2	174L	$65.85
Butadiene +	0.5-5	2	174LL	$70.25
Butane	25-1,400	800	104	$66.95
1-Butanol	2.5-150	C 50	114	$66.95
2-Butanol	5-150	100	115	$67.50
Butyl Acetate	0.05-0.8 Vol.%	150	142	$70.25
Butyl Acetate	10-300	150	142L	$67.50
Carbon Dioxide	10-100 Vol.%	5000	2HT	$64.25
Carbon Dioxide	100-4,000	5000	2LC	$66.95
Carbon Dioxide	300-5,000	5000	2LL	$65.30
Carbon Dioxide	2.5-40 Vol.%	5000	2HH	$65.30
Carbon Dioxide	0.5-20 Vol.%	5000	2H	$65.30
Carbon Dioxide	0.13-6 Vol.%	5000	2L	$65.30
Carbon Dioxide requires Airtec regulator	250-3,000		2A	$65.50
Carbon Dioxide requires Airtec regulator	200-3,000		2Ag	$66.00
Carbon Disulfide +	0.63-100	10	13	$66.95
Carbon Disulfide +	20-4,000	10	13M	$67.50
Carbon Monoxide	25-2,000	25	1LM	$65.30
Carbon Monoxide	5-50	25	1LL	$64.20
Carbon Monoxide	1-40 Vol.%	25	1HH	$66.95
Carbon Monoxide	0.1-10 Vol.%	25	1H	$66.95
Carbon Monoxide in Hydrogen	5-600	25	1LK	$65.85
Carbon Monoxide	2.5-2,000	25	1L	$65.30
Carbon Monoxide	8-1,000	25	1LA	$65.85
Carbon Monoxide	1-30	25	1LC	$65.85
Carbon Monoxide	0.05-4 Vol.%	25	1M	$67.50
Carbon Monoxide requires Airtec regulator	5 to 50		1A	$65.50
Carbon Tetrachloride +	0.5-60	5	134	$66.95
Carbon Tetrachloride +	0.25-12	5	134L	$67.50
Carbonyl Sulphide +	5-200	-	21	$66.95
Carbonyl Sulphide +	2-125	-	21LA	$66.95
Chlorine	0.25-10 Vol.%	0.5	8HH	$70.25
Chlorine	25-1000	0.5	8H	$66.95
Chlorine	0.1-16	0.5	8LA	$65.30
Chlorine	0.025-2	0.5	8LL	$66.95
Chlorine Dioxide	0.025-1.2	0.1	23L	$66.95
Chlorine Dioxide	0.1-10	0.1	23M	$67.50
Chlorobenzene	2-500	10	126	$67.50
Chlorobenzene	0.5-43	10	126L	$67.50
Chloroform +	4-400	10	137	$67.50
Chloroform +	0.5-27	10	137L	$70.65
Cresol	1-25	5	61	$67.50
Cyclohexanol	5-100	50	118	$67.50
Cyclohexanone	2-75	25	154	$66.95
Diborane	0.02-5	0.1	22	$67.50
Dichlorobenzene	2.5-300	10	127	$67.50
1,2-Dichloroethylene	5-250	200	139	$66.95
Dimethylacetamide	1.5-240	10	184	$66.95
Dimethylformamide	0.8-90	10	183	$66.95
Dimethyl Sulfide + requires Gastec Pyrolyzer	0.25-10	0.1	53	$70.25
Ethyl Acetate	0.1-1.5 Vol.%	400	141	$67.50
Ethyl Acetate	25-800	400	141L	$66.95
Ethanol	0.05-7.5 Vol.%	1000	112	$66.95
Ethanol	50-2,000	1000	112L	$70.25
Ethyl Ether	0.04-1 Vol.%	400	161	$67.50
Ethyl Ether	10-1,200	400	161L	$67.50
Ethyl Mercaptan	0.5-120	0.5	72	$66.95
Ethyl Mercaptan in LP Gas	2.5-40	0.5	72P	$72.70
Ethyl Mercaptan	0.2-75	0.5	72L	$65.85
Ethylene	25-800	-	172	$65.85
Ethylene	0.2-50	-	172L	$65.30
Ethylene Glycol +	10-100 mg/m3	C 100 mg/m3	165L	$67.50
Ethylene Oxide +	0.05-3 Vol.%	1	163	$67.50
Ethylene Oxide +	0.4-350	1	163L	$65.30
Ethylene Oxide +	0.1-10	1	163LL	$67.50
Fluorochlorocarbons requires Gastec Pyrolyzer	10-400	-	51	$70.25
Fluorochlorocarbons requires Gastec Pyrolyzer	250-6,000	-	51H	$70.25
Fluorochlorocarbons requires Gastec Pyrolyzer	1-54		51L	$70.25
Formaldehyde +	2-100	C 0.3	91	$65.85
Formaldehyde	8-6,400	C 0.3	91M	$67.50
Formaldehyde	0.1-40	C 0.3	91L	$65.30
Formaldehyde	0.05-1	C 0.3	91LL	$65.30
Gasoline	0.015-1.2 Vol.%	300	101	$66.95
Gasoline	30-2,000	300	101L	$65.85
Hexane	0.015-1.2 Vol.%	50	102H	$67.50
Hexane	10-1,200	50	102L	$66.95
Hydrazine	0.05-2	0.01	185	$67.50
Hydrocarbons Higher Class	100-3,000	-	105	$65.30
Hydrocarbons Lower Class	0.05-2.4 Vol.%	-	103	$69.30
Hydrogen	0.5-2 Vol.%	-	30	$66.95
Hydrogen Chloride	0.2-76	C 5	14L	$64.20
Hydrogen Chloride	10-1,000	C 5	14M	$65.30
Hydrogen Chloride	50-5000	c 2	14R	$70.25
Hydrogen Cyanide	0.05-1.6 Vol.%	C 4.7	12H	$67.50
Hydrogen Cyanide	0.36-120	C 4.7	12L	$65.30
Hydrogen Cyanide	17-2,400	C 4.7	12M	$70.25
Hydrogen Cyanide	0.2-7	C 4.7	12LL	$66.95
Hydrogen Fluoride	0.25-100	0.5	17	$65.30
Hydrogen Fluoride	0.09-72	C 2	17L	$65.30
Hydrogen Peroxide	0.5-10	1	32	$70.25
Hydrogen Sulfide	1-40 Vol.%	10	4HT	$65.30
Hydrogen Sulfide	0.1-4 Vol.%	10	4HH	$64.20
Hydrogen Sulfide	0.25-120	10	4LL	$64.20
Hydrogen Sulfide	10-4,000	10	4H	$64.20
Hydrogen Sulfide	25-1,600	10	4HM	$65.30
Hydrogen Sulfide	0.25-20 Vol.%	10	4HP	$66.95
Hydrogen Sulfide	1-240	10	4L	$64.20
Hydrogen Sulfide	1-40	10	4LK	$65.30
Hydrogen Sulfide	12.5-500	10	4M	$65.30
Hydrogen Sulfide	0.1-4	10	4LT	$64.20
Hydrogen Sulfide	0.5-12	10	4LB	$65.30
Hydrogen Sulfide & Sulfur Dioxide (Simultaneous) +	1.25-120 H2S, 0.25-20 SO2	2	45S	$66.95
Hydrogen Sulfide & Sulfur Dioxide (Total)	0.02-8 Vol.%	2	45H	$66.95
Isoamyl Acetate	10-200	100	148	$67.50
Isoamyl Alcohol	5-300	100	117	$67.50
Isobutyl Acetate	10-300	150	144	$67.50
Isobutyl Alcohol	10-150	50	116	$66.95
Isopropyl Acetate	20-500	250	146	$67.50
Isopropyl Alcohol	0.02-5 Vol.%	400	113	$65.30
Isopropyl Alcohol	25-800	400	113L	$65.85
Isopropyl Alcohol	20-440	400	113LL	$65.85
LP Gas	0.02-0.8 Vol.%	1000	100A	$70.25
Mercaptans	0.5-120	-	70	$70.25
Mercaptans	0.1-8	-	70L	$68.60
Mercury Vapor	0.05-13.2 mg/m3	0.025 mg/m3	40	$66.95
Methacrylonitrile +	0.2-32	-	192	$70.25
Methanol	0.002-4.5 Vol.%	200	111	$67.50
Methanol	2-56	200	111LL	$70.25
Methanol	20-1,000	200	111L	$65.30
Methyl Bromide +	10-600	1	136H	$66.95
Methyl Bromide +	2.5-200	1	136L	$66.95
Methyl Bromide +	1-36	1	136LA	$66.95
Methylcychlohexanone	2-100	50	155	$62.00
Methylcyc