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With these compact, easy to use filters, you can ensure that your gases, vacuums, inks, and other liquids you come in contact with are completely clean and dry. Cylindrical shape for the hood keeps the inside of the hood clean, which reduces the possibility of cross contamination from other fume hoods or dirty lab environments. The cylindrical design of the hood holds two prefilters, which keep the inside of the hood clean and provide larger volume. The prefilters remove particulates and unwanted gases that give off a by-product of the distillation process. The inside of the hood is filtered and double-vented, making it easy to circulate clean air over a larger surface area. The unique combination of shape and material makes the hood easy-to-clean and reliable, even with changing laboratory conditions.