Drosophila vials straight wall design,to minimize the release of food,provide more efficient loading,filling and stacking.Drosophila tube cardboard tray packaging,there is separation between the tube,the outer shrink wrap ● Material:PS,PP ● Color:Clear ● High transparent tube is conducive to observe fruit flies ● A variety of materials to choose from:green biodegradable materials,traditional PS ● Nano-porous surface is conducive to the growth of fruit flies healthy and comfortable ● Narrow mouth or wide mouth optional