/community-hubs/measurement-instrumentation/b/analytical-weblog/posts/cut-expensive-calibration-gas-by-more-than-halfby: Bonnie Crossland, product marketing manager – gas chromatographs, Rosemount Analytical Welcome to Analytic Expert – I’m Bonnie Crossland. As you know, gas chromatography has become the absolute standard of quality and excellence in natural gas measurementen-USTelligent Community 13