ParaPak collection vials are 30 mL plastic disposable devices are designed for the collection, preservation and transportation of stool specimens for intestinal parasites examination Empty vials for transport of specimens that do not require a transport medium or fixative The leak-proof screw caps are equipped with a special spoon for easy collection of the specimen The vials fit perfectly with the ParaPak MacroCon filtration system, creating a completely closed system, minimizing the exposure to potentially infectious agents Package/UOM: Pack (PK); manufacturer item 900312. Product Specifications Quantity Per Sell: 20 Shipping Dimensions: 6 x 3.8 x 8 IC Shipping Weight: 0.9 LB Application: Stool Specimen Container Brand/Series: Para-Pak® Color: Translucent with White Cap Material: Plastic Sterility: NonSterile Country of Origin: United States