Material: Clear borosilicate glass; Cap material: pp (polypropylene). | Used for lab testing, this vial is also widely used for storing small amount of chemical solutions and fumes | It can be used to store volatile organic solution such as acetone, fumes, alcohol and acid type solution. | Made of glass, no harmful substances are released, safe and healthy. | And it can keep these liquids for a very long time without drying out.