ION MVI User Manual page 14

MVI Instrument User Manual V2.4
If you suspect you are in an area contaminated with mercury, you MUST connect the charcoal filter to the inlet of the
MVI before adjusting the zero-control knob.
Due to the nature of the carbon filter case and the materials used, it can give odours which will show as a small
negative reading on the MVI when removed.
Preparing the MVI for use
The MVI is now ready for use.
Pioneering Gas Sensing Technology. Page 14 of 19 ionscience.com