Large image view: Tracing marijuana to its roots
极速六合彩 photo by Marmian Grimes
Matthew Wooller uses a spatula to load a sample of benzoic acid into a sample capsule. The facility used benzoic acid as a calibration standard for its instruments.
极速六合彩 photo by Marmian Grimes
Matthew Wooller uses a spatula to load a sample of benzoic acid into a sample capsule. The facility used benzoic acid as a calibration standard for its instruments.