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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.
) (67 28491)
2
MAXIMUM READING OF 1 PPM. ( 2PPM EU Pharmacopoeia – in CO2)
NO DISCOLORATION.
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