The 200mm Buchner Funnel is constructed of ceramic to allow for easy cleaning and easy filtration. We ship all glassware products with additional care, but sometimes they arrive broken. If glassware arrives broken, please contact us within 3 days of receiving your product and we will either send you a brand new piece or send you a refund! Any glassware broken after delivery voids all warranties. Thank you for understanding! For Technical Support, Questions, or Other Issues Please Email or Call Us!