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Nitrous Fumes (NO
REQUIREMENT
The media in the detector tube will discolour to show the presence of nitrous fumes. The total
length of the discoloration is the measure of concentration read directly from the scale in parts
per million.
Sulphur Dioxide (SO
REQUIREMENT
The media in the detector tube will change from grey blue to white to show the presence of
sulphur dioxide. The total length of the white section is the measure of concentration read
directly from the 1-25ppm scale in parts per million.
Polytest (CH 28401
REQUIREMENT
The media in the detector tube will discolour to provide qualitative determination of easily
oxidizable substances in air. Refer to Polytest data sheets for more specific information.
If discoloration occurs further investigation will be required to determine the source of the
contamination.
IMPORTANT – IT IS RECOMMENDED THAT YOUR SAFE-AIR MONITOR IS RETURNED
FOR RECALIBRATION AND SERVICING WITHIN 12 MONTHS FROM THE ISSUE DATE
OF ITS CALIBRATION CERTIFICATE
) (8103661)
x
-
MAXIMUM READING OF 2 PPM.
) (67 28491
)
2
-
MAXIMUM READING OF 1 PPM.
)
-
NO DISCOLORATION.
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