This is another example of zero, as set by the instrument, being compromised by RFI. There is no "RFI Interference" error message and yet there are cal. check results (with no source of ethyl alcohol). Note the "purge fail" caused by zero being set at about -.024 to -.029. A zero air blank therefore reads as 024-029.

Intoxilyzer 5000 in need of maintenance. Intoxilyzer® is a registered trademark of CMI, Inc. Instrument in ACACACACACA mode. Print inhibit on. No simulator, no source of ethanol or interferent. RFI from two Cobra walkie-talkies Channel 3 00 used, one transmitting, another receiving, so you can hear when "Talk" is pressed. The Intoxilyzer® 5000C is an "approved instrument" in Canada. RFI during air blank and internal standards generates phantom ethanol during cal. check.