Parter Medical Products manufactures Drosophila products that offer flexibility and product excellence at the best price. These products are specifically designed for Drosophila research. Manufactured from pure virgin medical grade plastic Quality Design Dependable Service Vials Available in crystal clear polystyrene , translucent & flexible polypropylene and virtually unbreakable K-resin Flat bottom straight wall design for convenient racking, stacking and filling Vials are available in both tray and bulk package The bulk pack vials are layered with open-end orientation for convenient handling and small case size The Tray pack comes in a 10x10 row configuration allowing quick and effortless filling