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  • Stephen Biss

Re-Calibration is Main Issue  Not Maintenance


Lawyers need to focus on the argument that regular re-calibration to manufacturer’s specifications is necessary to ensure scientific reliability.

The issue is not recent, repair, update, or maintenance but rather recent re-calibration. The calibration interval needs to be defined and followed. It needs to be relatively short, perhaps one year.

The concept of calibration interval can be found throughout the international literature.

Re-calibration also needs to include systems on the approved instrument other than ethyl alcohol quantitative analysis. Such other systems include breath flow, ambient fail threshold, interference threshold, and RFI threshold.

Note that in Jackson the instrument had been recently calibrated and in Vallentgoed the instrument had been recently re-calibrated.

#calibration #Vallentgoed

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Intoxilyzer®  is a registered trademark of CMI, Inc. The Intoxilyzer® 5000C is an "approved instrument" in Canada.
Breathalyzer® is a registered trademark of Draeger Safety, Inc., Breathalyzer Division. The owner of the trademark is Robert F. Borkenstein and Draeger Safety, Inc. has leased the exclusive rights of use from him. The Breathalyzer® 900 and Breathalyzer® 900A were "approved instruments" in Canada.
DrugTest® 5000 is also a registered trademark of Draeger Safety, Inc.. DrugTest® 5000 is "approved drug screening equipment" in Canada.
Alcotest® is a registered trademark of Draeger Safety, Inc. The Alcotest® 7410 GLC and 6810 are each an "approved screening device" in Canada.
Datamaster®  is a registered trademark of National Patent Analytical Systems, Inc.  The BAC Datamaster® C  is an "approved instrument" in Canada.