Avanti does not pre-package the majority of our lipids (the exception being pre-mixed bicelle preparations and DGPP which is highly unstable). All lipids are stored in bulk containers so that we can QC each product by TLC the same day it ships, which insures that you consistently get the highest quality lipid available. Therefore we can package our products in any unit size convenient for the customer. We do charge a packaging fee of $3.00/vial for non-standard packaging. Your customer service representative will notify you if any packaging fees apply when you place your order.