Methane, Ethane, Ethene (West for East)This test is used for areas with oil or natural gas this is a testing package we would recommend. Detection Limits are: Ethane Ethene 0. 00345 mg L Methane 0. 00173 Methane gas has been a hidden problem in many regions because methane is colorless, odorless, gas lighter than air, and highly flammable. When burned its purest form, methane gas produces carbon dioxide and water vapor. It is typically associated with wetlands, bogs, termites and other