calibration solutions / dilution standard solution / chemical compound / sample processing hardware / gas chromatographic method / surrogate stock solution / chemical / needed analyte solutions / internal standard stock solution / gas chromatograms / mg/mL solution / chemicals / reputable supplier / chemical analysis / Stock solutions / capillary gas chromatography / /
Organization
American Chemical Society / office of Ground Water / EPA office of Research and Development / U. S. ENVIRONMENTAL PROTECTION AGENCY CINCINNATI / Committee on Analytical Reagents / Occupational Safety and Health Administration / Environmental Protection Agency / /