Water samples were accurately measured on the UVF-3100 analyzer, calibrated
to Sitelab's GRO calibration kit.
The certified spiked concentration was
Sitelab's GRO result was 3.33 mg/L.
» Results below are compared to the
GRO in water concentrations reported by 83 participating laboratories using GC-FID, GC-PID, GC-MS
Examples of laboratory GRO methods used in this study: U.S. EPA 8015, 8015B,
8015M, 8020, 8260B, California LUFT, Maine 4.2.17, NWTPH-Gx and IDNR OA-1.
Accuracy is shown below.