We test for over 50 hydrocarbons, sulfur, and oxygenated/chlorinated products. That covers everything associated with the LPG’s we deal with. The point made about 100% recovery just meant that every analysis always adds up to 100% and only includes the components on the identifiable list. That’s why multiple tests are required to really adequately identify EVERYTHING but each individual test equals 100% individually. And yes recovery matters, an acceptable range is ± 2% that way there aren’t gross over/under normalization.