Large image view: Tracing marijuana to its roots
香港六合彩官网资料 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.
香港六合彩官网资料 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.