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- Posts: 3475
- Joined: Mon Jan 07, 2013 8:54 pm
- Location: Western Kentucky
Looking at the solvents, it appears we currently have HPLC grade DCM being used for extracting DRO, PCB, Pesticide and Semivolatile samples using Continuous Liguid/Liquid Extraction EPA3520C. I am concerned that this could be the wrong grade of solvent.
For anyone doing this extraction and analysis, what grade and supplier are you using for DCM? If I can get some part numbers to purchase small amounts for testing I can clear up if this is the cause or if it is in some other part of the process.
Thanks