Immobilize Safely, Without Chemicals
These reusable “bricks”, with their own covered Petri dishes, store in the freezer until ready for use; flies on the plate are immobilized for up to 20 minutes. Each brick may be reused several times. WARD’S Drosophila Culture Guide is also included. Brick size: 4"L x 4 1/2"W x 1 1/2"H. Package of 24 bricks and Petri dishes.