Eisco Buchner Funnel, 13Cm I.D. - Polypropylene, 2 Parts -, 12.5Cm Filter Paper Polypropylene plastic Büchner Funnel is both light weight and autoclavable. The funnel is in two parts; the top portion can be fitted with the lower one, forming a vacuum seal which does not require greasing. Base of top portion has a perforated filter plate. Designed for filter paper from 11cm to 12.5cm diameter (not included). Measurements: Mouth inner diameter: 130mm Assembled length: 210mm Stem length: 85mm Stem inner diameter: 20mm Product Features 2 PARTS || Büchner funnel with straight sides, two interlocking parts and a perforated filter plate is made of high quality polypropylene SEPARATION || For use in filtration (separation of solid matter and fluid) - Two parts combine forming a vacuum seal which does not require greasing USE 11 - 12.5CM FILTER PAPER || Filtration paper required but NOT included - Best with 11 to 12.5cm filter paper - Moisten filter paper with a liquid to prevent initial leakage MEASUREMENTS || Funnel stem measures 85mm (3.3 inches) with an inner diameter of 20mm (0.8 inches) - Fully assembled funnel measures 210mm (8.25 inches) in length with an inner diameter of 130mm (5.1 inches) MULTIUSE || Often used in combination with a Büchner flask (CH0422C01), Büchner ring and sinter seals Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!