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I work in a laboratory where gas chromatography is used extensively. We handle phthalates. What are the possible wash solvent for autosampler syringe? I've been using acetone.

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  • $\begingroup$ You could try use toluene a then ethyl acetate. $\endgroup$ – GRSousaJr Sep 4 at 12:46
  • $\begingroup$ Acetone is a remarkable solvent. Now if you use some phthalates which are either particularly polar or particularly non-polar, you may want to change the solvent. For really polar compounds, a mixture of methanol/water/acetonitrile may be great. For non-polar compounds, you may want to use dichloromethane. $\endgroup$ – SteffX Nov 16 at 13:29
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Methanol is less expensive. Don’t know how well it would work in your particular situation. We do semi volatiles (EPA 624) . Methanol works fine for the GC autosampler syringe.

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