Comparison with BP-Macondo, Control Sample Chromatogram, Analytical Chemical Testing Laboratory, Inc., November 8, 2010:
The compared sample is a fingerprint MATCH
Comments by chemist Bob Naman regarding the chromatogram, via Testing the Water Citizen's Initiative:
[It] clearly confirmed a match and is highly accurate and should put to rest any doubt that the oil that we found was 'sunscreen', 'motor oil', or any other form of 'naturally present' contaminant.
See original report: