Frequent Questions

In SW-846 Method 3620C Section 11.13.4, is 0.035 the correct elution amount for acetonitrile?

Section 11.13.4 of Method 3620C states, "Elute the column with 60 mL of methylene chloride / acetonitrile / hexane (50/0.035/49.65, v/v/v), collecting the eluate in a second flask. This is Fraction 2."  If the middle number were 0.35 instead of 0.035, the total of the three would be 100.  Is this just a typo?

 

That is a typo, which was corrected in the Update V version of the method.  The correct entry for acetonitrile should be 0.35, not 0.035.

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