Biologix Drosophila Narrow Vials, Bulk by Biologix are narrow fly vials for Drosophila stocks and crosses. Choose 25 × 95 mm polystyrene vials with high transparency and low weight, bulk packed 500 per case, or 24 × 94 mm borosilicate glass vials that are easy to clean and heat resistant, 1000 per case. Suited to fly labs of every size.