I have some samples of microbial degraded crude oil (MDCO) on hand. Whenever I look for a protocol to analyze crude oil using GC-FID or GC-MS, I often find that labs lack either the necessary column or standards. Recently, someone informed me that they have a wax column for GC-FID. Is a wax column suitable for profiling or analyzing crude oil? If so, how can I find a protocol for its use?