When using QwikCheck you are not violating the venting prohibition because?

Simply put, the exemption is based on the fact that to remove the oil from a system to check for acid in the oil, the refrigerant off-gas is on the order of a half ounce vented into the atmosphere. Therefore, since QwikCheck or any other testing device that vent less than half an ounce of refrigerant, for the purpose of testing for acid does not violate the EPA venting rules.