Gas or Vapour to be Measured Chemical Formula |
Gastec
Tube No. & Name |
Measuring Range (ppm) |
No.of Pump Strokes |
Shelf Life (year) |
Note | TLV- TWA,C (ACGIH) (ppm) |
||
Maleic anhydride C4H2O3 |
81 | Acetic acid | 0.8-20 | 1 | 3 | H | 0.25 | |
Mercaptans R•SH |
70 | Mercaptans | 5-120 | 1 | 3 | T | - | |
0.5-5 | 2-10 | |||||||
70L | Mercaptans | 4-8 | 1/2 | 2 | - | |||
0.5-4 | 1 | |||||||
0.2-0.5 | 2 | |||||||
0.1-0.2 | 4 | |||||||
2-Mercaptoethanol HSCH2CH2OH |
75L | tert-Butyl mercaptan | 0.5-7.5 | 1 | 2* | T | - | |
Mercury vapour Hg |
40 | Mercury vapour | 6-13.2mg/m3 | 1/2 | 3 | - | 0.025 mg/m3 |
|
0.25-6mg/m3 | 1 | |||||||
0.05-0.25 mg/m3 |
5 | |||||||
Mesityl oxide (CH3)2C:CHCOCH3 |
141L | Ethyl acetate | 33.8-1080 | 2 | 2 | T | 15 | |
Methacrylic acid CH2:C(CH3)COOH |
81 | Acetic acid | 1.8-45 | 1 | 3 | H | 20 | |
81L | Acetic acid | 0.35-14 | 1 | 2* | T | |||
Methacrylonitrile CH2:C(CH3)CN |
192 | Methacrylonitrile | 10-32 | 1 | 3 | + | - | |
0.5-10 | 2 | |||||||
0.2-0.5 | 4 | |||||||
Methaldehyde (CH3CHO)n |
91L | Formaldehyde | 0.065-3.25 | 3 | 3* | T | - | |
Methanethiol | See Methyl mercaptan | |||||||
Methanol CH3OH |
111 | Methanol | 1.5-4.5% | 1/2 | 3 | T | 200 | |
0.02-1.5% | 1 | |||||||
0.004-0.02% | 2 | |||||||
0.002-0.004% | 4 | |||||||
111L | Methanol | 40-1000 | 1 | 3 | T | |||
20-40 | 2 | |||||||
111LL | Methanol | 20-56 | 2 | 2 | T | |||
2-20 | 4 | |||||||
2-Methoxyethyl acetate CH3CO2CH2CH2OCH3 |
113L | Isopropyl alcohol | 50-700 | 2 | 3 | T | 0.1 | |
1-Methoxy-2-propanol CH3OCH2CH(OH)CH3 |
113L | Isopropyl alcohol | 50-800 | 4 | 3 | T | 100 | |
113LL | Isopropyl alcohol | 15.2-152 | 2 | 2 | T | |||
Methyl alcohol | See Methanol | |||||||
Methyl acrylate CH2:CHCO2CH3 |
141L | Ethyl acetate | 20-400 | 2 | 2 | T | 2 | |
2-Methyl allylchloride CH3CH2:CHCH2Cl |
131La | Vinyl chloride | 2.8-55 | 1 | 2* | + | - | |
Methyl amine CH3NH2 |
180 | Amines | 5-100 | 1 | 3 | T | 5 | |
180L | Amines | 0.5-10 | 1 | 2 | T | |||
N-Methyl aniline C6H5NHCH3 |
181 | Aniline | 3.5-42 | 2 | 3 | - | 0.5 | |
Methyl bromide CH3Br |
136H | Methyl bromide | 300-600 | 1/2 | 3 | + | 1 | |
20-300 | 1 | |||||||
10-20 | 2 | |||||||
136L | Methyl bromide | 100-200 | 1/2 | 2 | + | |||
10-100 | 1 | |||||||
2.5-10 | 4 | |||||||
136LA | Methyl bromide | 18-36 | 1 | 2 | + | |||
1-18 | 2 | |||||||
136LL | Methyl bromide | 1.2-3.0 | 1 | 2 | +T | |||
0.1-1.2 | 2 | |||||||
2-Methyl-3-butenenitrile (CH3)2CHCH:CHCN |
191L | Acrylonitrile | 0.4-12 | 2 | 3 | - | - | |
Methyl chloride CH3Cl |
51 | Fluorochlorocarbons (Pyrotectube) |
12-480 | 1 | 3 | + | 50 | |
51L | Fluorochlorocarbons (Pyrotectube) |
32-86 | 1 | 3 | + | |||
1.6-32 | 2 | |||||||
Methyl chloroform | See 1,1,1-Trichloroethane | |||||||
Methyl chloroformate ClCO2CH3 |
131La | Vinyl chloride | 58-1160 | 5 | 2* | + | - | |
Methylcyclohexane C6H11CH3 |
102H | n-Hexane | 0.04-0.84% | 1 | 3 | - | 400 | |
Methylcyclohexanol CH3C6H10OH |
119 | Methylcyclohexanol | 5-100 | 2 | 2 | T | 50 | |
Methylcyclohexanone C7H12O |
155 | Methylcyclohexanone | 50-100 | 2 | 2* | T | 50 | |
2-50 | 3 | |||||||
Methylene chloride CH2Cl2 |
138 | Methylene chloride | 50-500 | 1 | 3 | +T | 50 | |
25-50 | 2 | |||||||
138L | Methylene chloride | 60-150 | 1 | 2 | +T | |||
10-60 | 2 | |||||||
4-10 | 4 | |||||||
51L | Fluorochlorocarbons (Pyrotectube) |
1-20 | 2 | 3 | + | |||
Methylene iodide CH2I2 |
121L | Benzene | 0.4-20 | 5 | 3 | + | - | |
Methyl ether CH3OCH3 |
161 | Ethylether | 0.03-0.85% | 1 | 3 | T | - | |
Mehtyl ethy l ketone CH3COC2H5 |
152 | Methyl ethyl ketone | 0.02-0.6% | 2 | 3 | T | 200 | |
152L | Methyl ethyl ketone | 10-120 | 1 | 2* | T | |||
120-384 | 1/2 | |||||||
151L | Acetone | 21-1680 | 5 | 2* | T | |||
Methylhydrazine H2NNHCH3 |
185 | Hydrazine | 0.6-12 | 5 | 3 | H | C 0.1 | |
Methyl iodide CH3I |
230H | Methyl iodide | 100-6000 | 2 | 2 | T | 2 | |
6000-15000 | 1 | |||||||
15000-34800 | 1/2 | |||||||
230 | Methyl iodide | 0.5-1 | 4 | 1* | T | |||
1-20 | 2 | |||||||
20-46 | 1 | |||||||
46-108 | 1/2 | |||||||
121L | Benzene | 0.32-32 | 5 | 3 | + | |||
Methyl isobutyl ketone (CH3)2CHCH2COCH3 |
153 | Methyl isobutyl ketone | 0.05-0.6% | 2 | 3 | T | 50 | |
153L | Methyl isobutyl ketone | 2.5-50 | 1 | 1 | T | |||
50-130 | 1/2 | |||||||
Methylmercaptan CH3SH |
71H | Methylmercaptan | 1000-2700 | 1/2 | 3 | - | 0.5 | |
50-1000 | 1 | |||||||
20-50 | 2 | |||||||
71 | Methylmercaptan | 70-140 | 1/2 | 3 | T | |||
2.5-70 | 1 | |||||||
0.25-2.5 | 2-10 | |||||||
70 | Mercaptans | 3.5-84 | 1 | 3 | T | |||
0.35-3.5 | 2-10 | |||||||
70L | Mercaptans | 4-8 | 1/2 | 2 | T | |||
0.5-4 | 1 | |||||||
0.2-0.5 | 2 | |||||||
0.1-0.5 | 4 | |||||||
Methyl metacrylate CH2:C(CH3)CO2CH3 |
149 | Methyl metacrylate | 200-500 | 1 | 2 | T | 100 | |
10-200 | 2 | |||||||
N-Methyl morpholine CH3N(C2H4)2O |
180 | Amines | 5-100 | 1 | 3 | T | - | |
180L | Amines | 0.3-6 | 1 | 2 | T | |||
4-Methyl pyridine C6H7N |
182 | Pyridine | 0.38-10.5 | 1 | 3 | T | - | |
N-Methyl pyrrolidone C5H9NO |
180 | Amines | 50-270 | 1 | 3 | T | - | |
Monochlorobenzene | See Chlorobenzene | |||||||
Morpholine NH(C2H4)O |
180 | Amines | 9-180 | 1 | 3 | T | 20 | |
180L | Amines | 0.5-10 | 1 | 2 | T |
T:Temp Correction | H:Humidity Correction | *:Refrigerator Store | Mesh:Correction Factor/Chart |