This company states the exact certs and for what makers. Didn't see that on Redlines site. I also know dealerships that use tools that aren't approved by the OEM's as well.
http://www.vacutec.com/oem/index.html
http://www.vacutec.com/aboutus.html
http://www.vacutec.com/leaktesting.html
For those of you who hate clicking links
OEM EVAP-Approved Technology
We want you to know that all Vacutec® smoke machines we currently build and are listed on this website contain 'OEM EVAP-Approved Technology' inside; which means it is technology that is already tested and approved by the Automakers!
Be aware that the term "EVAP-approved" has been misused by one or more competitors and they would like you to believe that their products are also approved for EVAP testing -- when in fact they are NOT approved by any Automaker. That's probably why they claim "EVAP-Approved" and not "OEM EVAP-Approved". Non OEM-approved equipment may be unsafe and risks damaging vehicle systems and voiding vehicle warranties.
What's up with Baby Oil?
Be aware of companies that make the claim that 'baby oil' can be used as the smoke vapor solution for EVAP testing. No Automaker in the world approves introducing baby oil vapor into their vehicles, period! In fact, even baby oil manufacturers clearly state: "It [baby oil] is NOT intended to be used nor should it be used in or in conjunction with any mechanical or automotive component or equipment", period!
Test Safely - You Can't Afford Not To
We support the safer testing practices of using an inert gas such as nitrogen, as the carrier gas for the smoke vapor, when testing a vehicle's EVAP system. In fact, virtually all automakers that have approved the use of smoke vapor technology recommend or require the use of nitrogen. What used to be a trend toward nitrogen has become a standard!
Someone did do their homework.