by clicking the arrows at the side of the page, or by using the toolbar.
by clicking anywhere on the page.
by dragging the page around when zoomed in.
by clicking anywhere on the page when zoomed in.
web sites or send emails by clicking on hyperlinks.
Email this page to a friend
Search this issue
Index - jump to page or section
Archive - view past issues
FLEXO Magazine : April 2009
TECHNOLOGIES & TECHNIQUES based chromatography data system. It can not be overstated that your residual solvent analysis results are only as good as the orig- inal standard and the operator’s ongoing GC performance checks and review of this data. By analyzing a check standard on a routine basis and with careful review of the chromatogram and report, you will be sure that your GC data is good. This data will provide your production group with information that will enable them to optimize the press operation, lower operating costs and improve press produc- tivity. Your facility will also have accurate GC data that will ensure your printed materials are within your own and customer specifi - cations for residual (retained) solvents. ¦ FIGURE 4. Data system report information. are larger than expected. High area counts for the check standard indicate that the sample size was too large or a GC injector or detector setting was changed. SUMMARY All gas chromatography sample data is relative to the informa- tion stored for a previously analyzed known standard. This is true for either manually calculated results or those generated by a PC ABOUT THE AUTHOR: Burton Todd is the technical director of ChromLab. He has provided expert on-site GC training and support for the analysis of residual solvents in fl exible packaging materials and for the analysis of printing ink solvents for more than 25 years. He can be reached by email at email@example.com or by phone at 610-644-2260. Editor’s Note: This is part two in a series of FLEXO articles focusing on gas chromatography applications for fl exible packaging printing/converting. Part one appeared in FLEXO February 2009, pages 44-46.