How can I get validation without IS (Internal Standard) for 3 -MCPD?

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Valentina Christova-Bagdassarian

The d5-3 MCPD as IS is better to be used,but if you have not them, you may use the calibration curve with 3-MCPD standars solutions.

d5-3-MCPD IS - 1 mg/ml in ethyl acetate. See EN 14 573:2004.

Steven Schoenfeld

I use 3-methoxy propane diol as an internal standard for the phenylboronic acid method and 1,2 hexane diol for the HFBI/HFBA method.