Formulasi Sediaan Gel Handsanitizer Ekstrak Metanol Rumput Laut (Euchema spinosum) Asal Kota Bontang Kalimantan Timur: Formulation of Hand Sanitizer Gel of Methanol Extract Seaweed (Euchema spinosum) from Bontang City, East Kalimantan - Zahra Praselya; Nurul Fitriani; Herman Herman (Fakultas Farmasi, Universitas Mulawarman, Samarinda, Indonesia, 2022)