Polyamidoamine (PAMAM) dendrimers are the most common class of dendrimers suitable for many materials science and biotechnology applications. PAMAM dendrimers consist of alkyl-diamine core and tertiary amine branches. They are available in generations G 0 - 10 with 5 different core types and 10 functional surface groups. Most PAMAM dendrimers are supplied as solutions in methanol for improved long-term storage stability. They can be dried and reconstituted in other application-specific solvents.