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Peak area decreasing. triglyceride analysis

Discussions about GC and other "gas phase" separation techniques.

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Peak area decreasing. triglyceride analysis

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Ievheniya
I have some problem with GC analysis of triglycerides in cocoa-butter. From one injection to another I see decreasing of peakes area. Injection method is pulsed split. Please suggest me decision of my problem

Re: Peak area decreasing. triglyceride analysis

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chromatographer1
Clean, clean, clean, every place that your sample touches.

Remove the first meter of column.

Best wishes,

Rod
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