Servomex 1100A - Appendix 6 Effect of Background Gases

Gas Formula Molar Zero Offset
mag.susc 20/C 50/C 60/C 110/C
x 10
-6
x 0.01% x 0.01% x 0.01% x 0.01%
A6.5
Methyl formate HCOOCH
3
-32.00 -0.58 -0.64 -0.66 -0.75
Methyl iodide CH
3
I -57.20 -1.31 -1.44 -1.48 -1.71
Methyl iso-butyl ketone (MIBK) C
4
H
9
COCH
3
-69.30 -1.66 -1.82 -1.88 -2.16
Methyl mercaptan CH
3
SH -35.30 -0.67 -0.74 -0.76 -0.88
Molybdenum hexaflouride MoF
6
-26.00 -0.40 -0.45 -0.46 -0.53
Monochlorobenzene C
6
H
5
Cl -70.00 -1.68 -1.85 -1.90 -2.19
Neon Ne -6.70 0.15 0.17 0.17 0.20
Nitric oxide NO 1461.00 42.56 42.96 42.94 41.62
Nitrobenzene C
6
H
5
NO
2
-61.80 -1.44 -1.59 -1.63 -1.88
Nitrogen N
2
-12.00 0.00 0.00 0.00 0.00
Nitrogen dioxide NO
2
150.00 5.00 16.00 20.00 35.00
ortho-Nitrotoluene C
6
H
4
CH
3
NO
2
-72.30 -1.74 -1.92 -1.98 -2.28
para-Nitrotoluene C
6
H
4
CH
3
NO
2
-76.90 -1.88 -2.07 -2.13 -2.45
Nitrous oxide N
2
O -18.90 -0.20 -0.22 -0.23 -0.26
n-Nonane C
9
H
20
-108.13 -2.78 -3.06 -3.16 -3.63
n-Octane C
8
H
18
-96.63 -2.45 -2.70 -2.78 -3.19
Oxygen O
2
3449.00 100.00 100.00 100.00 100.00
Ozone O
3
6.70 0.54 0.60 0.61 0.71z
iso-Pentane C
5
H
12
-64.40 -1.51 -1.67 -1.72 -1.98
n-Pentane C
5
H
12
-63.10 -1.48 -1.63 -1.68 -1.93
0.01%Phenol C
6
H
5
OH -60.21 -1.39 -1.54 -1.58 -1.82
Phosphine PH
3
-26.00 -0.40 -0.45 -0.46 -0.53
Phosphorous oxychloride POCl
3
-69.00 -1.65 -1.82 -1.87 -2.15
Propane C
3
H
8
-38.60 -0.77 -0.85 -0.87 -1.00
iso-Propanol (CH
3
)
2
CHOH -47.60 -1.03 -1.13 -1.17 -1.34
Propene CH
3
CH=CH
2
-31.50 -0.56 -0.62 -0.64 -0.74
n-Propyl acetate CH
3
COOC
3
H
7
-65.90 -1.56 -1.72 -1.77 -2.03
Propyl amine C
3
H
7
NH
2
-52.40 -1.17 -1.29 -1.33 -1.52
Propyl chrloride C
3
H
7
Cl -56.10 -1.27 -1.40 -1.45 -1.66
Propylene C
3
H
6
-31.50 -0.56 -0.62 -0.64 -0.74
Propylene oxide OCH
2
CHCH
3
-42.50 -0.88 -0.97 -1.00 -1.15
iso-Propyl ether (CH
3
)
4
CHOCH -79.40 -1.95 -2.15 -2.21 -2.54
Propyl flouride C
3
H
7
F -52.20 -1.16 -1.28 -1.32 -1.52
Pyridine N(CH)
5
-49.21 -1.08 -1.19 -1.22 -1.40
Silane SiH
4
-20.50 -0.25 -0.27 -0.28 -0.32
Silicon tetracloride SiCl
4
-88.30 -2.20 -2.43 -2.50 -2.88
Styrene C
6
H
5
CH=CH
2
-68.20 -1.62 -1.79 -1.85 -2.12
Sulphur dioxide SO
2
-18.20 -0.18 -0.20 -0.20 -0.23
Sulphur hexaflouride SF
6
-44.00 -0.92 -1.02 -1.05 -1.21
Tetrachoroethylene Cl
2
C=CCl
2
-81.60 -2.01 -2.22 -2.28 -2.63
Tetrahydrofuran C
4
H
8
O -52.00 -1.16 -1.27 -1.31 -1.51
Toluene C
6
H
5
CH
3
-66.11 -1.56 -1.72 -1.78 -2.04
1,1,2 Trichloroethane (Freon 113) CHCl
2
CH
2
Cl -66.20 -1.57 -1.73 -1.78 -2.05
Trichloroethylene CHCl=CCl
2
-65.80 -1.55 -1.71 -1.77 -2.03
Triflourochloroethylene C
2
F
3
Cl -49.10 -1.07 -1.18 -1.22 -1.40