A B C G H I L M N S T V Y Z A B C G H I L M N S T V Y Z A B C G H I L M N S T V Y Z Galdolinium Oxide (Gd2O3) 99.9+% – <100nm PDF Graphene 99.5+% – 6-8nm PDF Graphene Oxide 97+% – <2nm PDF Graphite 99.95% – 40-50nm PDF