Gastec gas detector tubes are thin glass tubes with calibration scales printed by which you can directly read concentrations of the substances (gases and vapours) to be measured. Each tube contains detection reagent(s) that are especially sensitive to the target substance and quickly produces a distinct layer of colour change.
Over 545 different tubes are available - See Schedules below for list of Tubes, Dosi-Tubes & Accessories that APC carry in stock. (If you do not see the tube or part you require listed below please contact us and we will be happy to order it for you)
On-site measurements can be performed easily by anybody, anytime and anywhere, in a short period of time.
Easy to check direct reading system:- merely draw in the sample gas and read the calibrator indication at the front edge of the colour-change layer.
An extensive measuring range can be obtained by adjusting the volume of the sample to be drawn.
In order to assure high precision, each production lot is tested and calibrated independently. Each detector tube has its own quality control number printed on the tube.
Long shelf-life with excellent long term stability.
Low cost
Each pack contains 10 Gastec tubes.
1 pack (10 tubes) = $58.00 +gst
5+ packs = $52.00 +gst
Schedule of available Tubes
Gas
Tube no.
Measuring range (in ppm unless otherwise stated) with 1 pump stroke
Acetic Acid
81
2-50
81L
0.25-10
Acetaldehyde
92
300-750
92L
1-20
92M
5-100
Acetone
151L
4000-12000
Acid Gases
80
40-80
Acrylonitrile
191
120-360
191L
6-18
Amines
180
5-100
180L
0.5-10
Ammonia
3H
1-16%
3HM
0.05-1.6%
3M
50-500
3LA
5-100
3L
1-30
Arsine
19LA
2.4-10
Benzene
121
60-120
121L
12-60
121SL
20-100
Butyl Acetate
142L
10-300 (2 strokes)
tert-Butyl Mercaptan
75L
1-15 mg/m3
Carbon Dioxide
2A
250-3000
2H
1-10%
2HH
2.5-5%
2L
0.25-3%
2LC
100-2000
2LL
300-5000
Carbon Monoxide
1A
5-50
1HH
1-2%
1H
0.2-5%
1M
0.1-2%
1LM
50-1000
1L
25-1000
1LA
25-500
1LC
1-30
1LK
100-300
1LL
5-50 (2 strokes)
Carbon Tetrachloride
134
2.5-60
Carbonyl Sulphide
21
10-100
Chlorine
8HH
0.25-0.5%
8LA
0.5-8
8LL
0.05-1
Chloroform
137
10-100 (5 strokes)
Chlorine Dioxide
23M
0.5-5
23L
0.05-0.6
n,n-Dimethyl Formamide
183
2-30
n,n-Dimethyl Acetamide
184
60-240
Ethanol
112
0.05-2.5%
112L
100-2000
Ethyl Acetate
141
0.1-1.5%
141L
25-800 (2 strokes)
Ethylene
172
25-800
172L
50-100 (2 strokes)
Ethylene Glycol
165L
10-100mg/m3 (2 strokes)
Ethylene Oxide
163L
100-350
Ethyl Mercapton
72
5-120
72L
0.5-30
Formaldehyde
91
20-50
91M
20-2000
91L
5-40
91LL
0.05-1
Gasoline (Petrol)
101L
1000-2000
Hexane
102L
50-1200
Hydrocarbons (Lower Class)
103
0.1-1.2%
Hydrocarbons (Higher Class)
105
200-3000
Hydrogen
30
0.5-2%
Hydrogen Chloride
14M
20-500
14L
1-20
Hydrogen Cyanide
12M
50-800
12L
2.5-60
12LL
0.2-7 (2strokes)
Hydrogen Fluoride
17
20-100
Hydrogen Peroxide
32
0.5-10 (5 strokes)
Hydrogen Sulphide
4HT
2-20%
4HH
0.1-2%
4H
100-2000
4HM
50-800
4HP
0.5-10%
4M
25-250
4L
10-120
4LL
2.5-60
4LB
1-6
4LT
0.2-2
4LK
2-20
Isopropyl Acetate
146
20-500 (2 strokes)
Isopropyl Alcohol
113L
50-800
LPG
100A
0.02-0.8%
Mercaptans
70L
0.5-4
Mercury
40
0.25-6mg/m3
Methanol
111
0.02-1.5%
111L
40-1000
Methyl Bromide
136H
20-300
136L
10-100
136LA
18-36
Methyl Chloroform
135
100-500
135L
20-200
Methylene Chloride
138
50-500
Methyl Ethyl Ketone (MEK)
152
0.02-0.6%(2 strokes)
Methyl Isobutyl Ketone
153
0.05-0.6% (2 strokes)
Methyl Mercaptan
71
2.5-70
Methyl Methacrylate
149
200-500
Nickel Carbonyl
20L
200-800
Nitric Acid
15L
1-20
Nitrogen Dioxide
9L
30-125
Nitric Oxide
10
5-200
Nitrogen Oxides
11S
10-250
11L
5-16.5
Oil Mist
109A
0.3-1.5 mg/m3
109AD
0.2-5.0 mg/m3
Oxygen
31B
3-6%
Ozone
18M
20-200
18L
0.6-3
Phenol
60
25-62.5
Phosgene
16
5-20
Phosphine
7LA
2.5-9.8
7L
50-100
Smoke Tubes
501
Stoddard Solvent
128
50-8000 mg/m3
Styrene
124
20-500
124L
25-100
Sulphide Ion (for dissolved substances in solution)
