
A-19
Effect of interference gases on AG measurements
Quantitive effect(%
ABS
)
3)
Gas
Concentration(%)
CO
2
N
2
O Agent
1)
O
2
CO
2
/ / 0.1 0 0.2
N
2
O / 0.1 / 0.1 0.2
Agent
1) 2)
/ 0.1
5)
0.1
5)
0.1
4)
1
Nitrogen ≤78%
0 0
0 0
Xenon <100%
0.1 0
0 0.5
Helium <50%
0.1 0
0 0.5
Ethanol <0.1%
0 0
0 0.5
Acetone <1%
0.1 0.1
0 0.5
Methane <1%
0.1 0.1
0 0.5
Saturated Isopropanol
vapour
/ 0.1 0 0 0.5
Metered dose inhaler
propellants,
/ Unspecified Unspecified Unspecified 0.5
Methoxyflurane / Unspecified Unspecified Unspecified Unspecified
1) Agent represents one of Des, Iso, Enf, Sev, and Hal.
2) Multiple agent interference on CO
2
, N
2
O and O
2
is typically the same as single agent interference.
3) For CO2, N2O and Agents, maximum interference from each gas at concentrations within specified
accuracy ranges for each gas. The total interference of all gases is never larger than 5%
REL
.
4) Only applicable for AION 03-type module, meaning the secondary agent interference on the
primary one.
5) For AION 02-type module, it is the interference provided that input of used anaesthetic agent has
been done.
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