What is the difference between Pre-Mixed, Pre-Defined, and Custom?
Choose “Pre-Mixed” if you have adjusted your sample concentration following our guidelines and have already added your own sequencing primers, or are requesting one of GENEWIZ’s free universal primers. Choose “Pre-Defined” if you have adjusted your sample concentration following our guidelines, but are supplying your primer in a separate tube for GENEWIZ to add (small additional charge may apply). Choose “Custom” if you want GENEWIZ to adjust your sample concentration and add your primers (additional charge may apply).