Bel-Art Right-to-Know Safety-Vented/Labeled 4-Color Isopropanol Wide-Mouth Wash Bottles; 500ml (16oz), Polyethylene w/Yellow Polypropylene Cap (Pack of 4) (F11816-0008) Wide-mouth wash bottle used to wash labware and to store washing solutions, such as acetone or deionized water LDPE body for flexibility, elasticity, and impact, stress-cracking, and moisture resistance, and is lightweight Cylindrical shape for a wide variety of applications that require solution containment One-piece polypropylene stem and draw tube closure has a safety valve that allows volatile solvent vapors to escape during storage, but seals when dispensing liquid to prevent drips Permanent, chemical-resistant, color Right-to-Know label provides flammability, health hazard, reactivity, and health warning information