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We're using a FPD for Sulfur analysis but the results are inconsistent for Carbonyl Sulfide. How can we obtain reliable results?

Question asked by fgandrow on Oct 31, 2020
Latest reply on Nov 5, 2020 by fgandrow

We were using a DB-1 column but switched to a Gaspro. We were getting unrealistic results for the Carbonyl Sulfide. Sometimes getting @ 190ppm Carbonyl Sulfide but only getting @ 30ppm total sulfur by SCD. Now our results are inconsistent from run to run with the same sample.