Gastec 351A-30, Instruction Manual

Page: 3 / 4

Tube No.
Gas or Vapour to be Measured
Sampling time
for 1 pump
stroke （ 100mL ）
Sampling time for a
half pump stroke
（ 50mL ）
Correction factor
70L Mercaptans 2min. 1min. NONE
70LN Mercaptans 1.5min. NONE
72 Ethyl mercaptan 2min. 1.00
72LN Ethyl mercaptan 1.5min. NONE
75N tert-Butyl mercaptan 1.5min. NONE
75LN tert-Butyl mercaptan 1.5min. 1.12
81L Acetic acid 2min. 1min. 1.19
91L Formaldehyde 2min. 1.16
92M Acetaldehyde 1min. 1.11
100A LPG 2min. NONE
101L Gasoline 2min. 1.25
102L Hexane 1.5min. 1.16
103 Hydrocarbons (Lower class) 3min. 1.5min. NONE
105 Hydrocarbons(Higher class) 2min. 1min. NONE
106 Petroleum naphtha 1min. 30sec. NONE
111 Methanol 1min. 30sec. 1.40
111L Methanol 3min. 1.25
112 Ethanol 1.5min. 45sec. 1.35
112L Ethanol 3min. 1.21
117 Isoamyl alcohol 2min. 1.21
118 Cyclohexanol 2min. 1.35
120 Aromatic hydrocarbons 1.5min. 45sec. 1.35
121 Benzene 1.5min. 1.22
121S Benzene 2min. 1.53
121SL Benzene 2min. 1.30
121L Benzene 3min. 1.19
122 Toluene 2min. 1min. 1.35
122L Toluene 1.5min. 1.22
123 Xylene 2min. 1min. 1.33
123L Xylene 1.5min. 1.47
124 Styrene 1min. 30sec. 1.48
124L Styrene 1min. 30sec. 1.46
131 Vinyl chloride 2min. 1min. 1.17
131L Vinyl chloride 1.5min. 1.25
131La Vinyl chloride 2min. 1min. NONE
131La 1,3-Dichloropropene 2min. 1min. 1.17
131LB Vinyl chloride 1.5min. 1.29
132LL Dichlorvos 1.5min. 45sec. 1.14
134 Chloropicrin 1.5min. 1.28
134L Chloropicrin 2min. 1.28
135 1,1,1-Trichloroethane 3min. 1.5min. NONE
136H Methyl bromide 2min. 1min. NONE
136L Methyl bromide 2min. 1min. NONE
136LA Methyl bromide 1.5min. 45sec. 1.15
136LL Methyl bromide 3min. NONE
139 1,2-Dichloroethylene 1min. 30sec. NONE
141L Ethyl acetate 2min. NONE
141L
Methyl
isothiocyanate
Shelf life
before Sep.2021
2min. 1.28
Shelf life
Sep.2021 or after
2min. 1.36