Description: "These quality Drosophila vials are precision moulded from premium grade polystyrene, K-Resin
or polypropylene. All of Genesee Scientific fly vials are conveniently offered in either tray pack or bulk pack configurations. The tray pack 10 x 10 row configuration is great for quick, effortless filling. The bulk pack vials are layered with open-end orientation for convenient handling and smaller case size."
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