Description_x000D_ General description_x000D_ This proficiency testing sample is produced in accordance with ISO/IEC 17043:2010. All information regarding the use of this material can be found in the reporting packet supplied for each sample._x000D_ Preparation Note_x000D_ Perform the Gas Chromatography from USP general chapter for Procedure A, or by using an in-house validated method for residual solvent analysis._x000D_ Other Notes_x000D_ Quick-Turn Study - (non-scheduled proficiency test that is available at any time)